protocol.route.reference

Protocol and Routing Reference

Separate applications, protocols, transports and routes to understand connection setup, resource use, mobile power draw, packet-loss recovery and peak-hour congestion. The goal is not to memorize one “best protocol”, but to build a reusable selection method.

90+ countries / 200+ routes Unlimited simultaneous devices 7-day no-questions-asked refund

Guides covers the quick path from registration and plan selection to retrieving a subscription and completing the first connection. This page is a technical reference for comparing protocols, routes or connection issues by chapter. Client access and subscription details are available in the signed-in user panel; this page provides no static installers and does not require copying lengthy configurations.

Keep three questions separate while reading: how the protocol represents and protects data, how the transport handles network changes, and how the route carries data to the exit. Looking only at the protocol name can make route congestion look like a protocol failure; looking at a single latency result can hide jitter, retransmissions and mobile-network handoffs during sustained use.

reference.layer_model

Start with the layered model: a protocol is not a route

What applications, protocols, transports and paths each do

A cross-border connection can be divided into the application, proxy protocol, transport method and network path. The application layer determines the traffic pattern: web browsing usually involves many short connections and concurrent requests, video continuously fetches larger data segments, while voice and interactive tasks care more about timely delivery. The proxy protocol describes the destination, identity and data encapsulation; the transport layer handles reliable delivery, ordering or rapid recovery; and the network path consists of local access, carrier interconnection, relay entry, cross-border links and the exit. Together they determine the final experience, but none replaces another.

That is why “which protocol is faster” cannot be answered outside its environment. When the path is stable and round-trip time is smooth, a streamlined protocol usually has more room to perform; with intermittent packet loss, recovery strategy and congestion control matter more; when a local network frequently switches between Wi-Fi and cellular service, connection migration, handshake overhead and the client’s background policy also affect the result. A protocol name describes an implementation approach, not how a route will perform at a particular location, on a particular network or at a particular time.

Observe the control plane and data plane separately

When a connection is established, the client first resolves the domain, confirms server reachability, performs the transport handshake, verifies identity and initializes the protocol. This is the control plane. Only after the connection succeeds do web pages, video, files and app requests enter the data plane. Control-plane failures often look like an endless connection attempt, a handshake timeout or an immediate disconnect; data-plane problems usually look like a normal connection icon but incomplete pages, repeated video quality drops or sawtooth download speeds.

This distinction is essential for troubleshooting. For control-plane failures, first check the local network, system time, DNS resolution, client permissions and target-server reachability instead of repeatedly changing app routing rules. For data-plane issues, examine path quality, transport type, application concurrency and exit region. Mixing the two creates a loop of changing protocols without changing the symptoms, because the layer that actually failed was never addressed.

Replace protocol rankings with variable-based testing

A more reliable selection method is to hold most conditions constant and change one variable at a time. For example, compare protocols on the same region, route and client first; once the protocol difference is clear, hold the protocol constant while comparing direct, relay and dedicated routes. If the region, protocol, transport and client all change together, even a different result cannot show which factor caused it. Technical choices should be reproducible, not based on a momentary impression after pressing Connect.

VPN PY provides entry points for Windows / macOS / iOS / Android / Linux. The protocols actually available depend on the subscription delivered in the user panel and the client in use. Before choosing, read how the client labels protocols, transports and routing modes. If the goal is simply to complete the first connection, follow the quick-start path; if you are comparing entry regions, exit regions and route types, also review the route list so differences caused by region are not mistaken for protocol differences.

reference.protocols

Design trade-offs and practical limits of common protocols

Shadowsocks: straightforward structure, dependent on path quality

Shadowsocks is relatively straightforward in structure. Clients can usually initialize quickly, and its encapsulation overhead is easy to keep under control. It suits environments with good path quality, limited client resources, and primarily web browsing or everyday app traffic. Because the ecosystem is broad, the actual experience depends on the client core, encryption method, DNS resolution and routing rules. The same name does not mean every client behaves identically.

Its limits are just as clear: the protocol itself cannot repair persistent route congestion. When the underlying transport relies on a reliable byte stream, packet loss can trigger retransmissions and head-of-line waiting, slowing multiple page resources together. In that situation, switching routes is usually more effective than repeatedly changing encryption settings. For sustained video or large-file transfers, also watch whether speed holds over time rather than focusing on a brief peak just after connection.

VMess: complete fields, greater need for configuration consistency

VMess commonly includes a fairly complete set of identity and time-related checks and can work with multiple transports. Its strengths are a mature implementation and clear combinations, making it suitable for existing subscriptions and multi-client environments. In return, it relies more heavily on client and server fields matching. Clock drift, mismatched transport parameters, or a mismatch between the domain and handshake target can all appear as a reachable server with failed protocol initialization.

When troubleshooting VMess, reinstalling the client should not be the first step. A more useful order is to confirm that the subscription has refreshed, the node is still included in the current plan, the system clock is synchronized automatically, and all transport fields were imported from the subscription. Manually changing one field and forgetting to restore it can make the same node work on one device and fail on another. Unlimited simultaneous devices does not mean maintaining separate hand-edited configurations; keeping one consistent subscription source is usually easier to manage over time.

Trojan and VLESS: lean protocol layers, with differences in the transport

Trojan is commonly paired with standard encrypted transport. Its connection flow is familiar to users of network tools: complete the secure transport handshake first, then verify the protocol identity. Performance depends heavily on certificate validation, DNS resolution and the handshake path. An incorrect system clock, unstable resolution or middleboxes that handle long-lived connections poorly can cause slow handshakes, occasional resets or failed background recovery. The protocol password itself is often not the first suspect.

VLESS keeps the protocol layer relatively lean, usually leaving encryption and transport security to the external carrier. It suits setups that aim to avoid duplicated encapsulation and let a modern client manage transport parameters consistently. Leaner does not automatically mean faster: the result still depends on the chosen transport, route and client implementation. If two VLESS routes use different entries and carriers, comparing their speeds says little about the protocol. Make the test conditions as similar as possible first.

Hysteria2 and TUIC: fast transport for fluctuating paths

Hysteria2 and TUIC both place greater emphasis on handling congestion, concurrency and packet-loss recovery over datagram transport. They generally suit paths with jitter, where traditional reliable byte streams recover slowly after loss while applications still need sustained throughput. Video, file transfers and highly concurrent requests may show the value of this design more clearly. Datagram quality is also affected by the local network, routing equipment and carrier path policies; when the datagram path itself is unstable, performance may be worse than with a more traditional design.

Neither should be treated as an unconditional speed boost. Rapid recovery consumes compute, wakes the network module and maintains more connection state, while mobile background limits can affect connection persistence. Test both active foreground use and recovery after the screen locks rather than performing a single desktop download. The purpose of protocol comparison is not to create a permanent ranking, but to identify which design fits the current path.

Protocol Primary design tendency Best scenarios to observe First checks
Shadowsocks Straightforward structure, broad implementation Stable paths, web browsing and everyday apps Client core, routing, packet loss
VMess Complete identity fields, flexible transport combinations Existing subscription compatibility and multi-client use System time, subscription fields, transport matching
Trojan Relies on a standard encrypted transport handshake Environments with stable domains and certificate paths Resolution, time, handshake target
VLESS Lean protocol layer, relies on external transport Modern clients and unified transport management Carrier, entry point, client support
Hysteria2 Datagram transport and rapid recovery Fluctuating paths, sustained throughput Datagram quality, background policy, power use
TUIC Datagram concurrency and connection-state management Concurrent requests and mobile-network handoffs Client implementation, path support, recovery behavior
reference.connection_cost

How to compare connection setup speed and resource use

Connection speed is determined by a sequence of stages

After you tap Connect, the client does not immediately transmit application data. It must read the subscription, select a node, resolve the server address, establish the underlying transport, complete security checks, initialize protocol state, and then pass system traffic to a virtual network interface or local proxy. If any stage blocks, the interface may simply show “Connecting”. Connection setup speed therefore cannot be attributed only to the length of the protocol code. DNS cache state, entry distance, system network-extension permissions and whether the client has warmed up in the background can make a larger difference.

When comparing connection speed, put the client in the same state first. A cold start includes program loading and core initialization, while a warm switch may reuse DNS results and network state; mixing the two produces no useful comparison. Also distinguish the first connection after import from everyday reconnection: the first may trigger system permission prompts, network-extension creation or certificate checks, while routine reconnection usually skips some of these steps. Record whether the app had just launched, a node was switched, the network changed or the device was recovering from the lock screen.

CPU, memory and network wakeups are separate costs

Resource use cannot be judged from one percentage in Task Manager. Protocol encryption and decryption mainly consume processor time; connection tables, routing rules, DNS caches and concurrent stream state use memory; frequent small packets increase network-module wakeups. Desktop devices generally absorb short processor spikes more easily, while mobile devices are more sensitive to sustained wakeups. A connection that uses little processor time but keeps network activity running can still noticeably affect battery life.

Different applications also change the resource profile. A browser with many pages open creates more concurrent connections and DNS lookups; video apps favor sustained throughput; messaging apps use little traffic most of the time but require background connections to recover promptly. The state handled by the protocol and client changes accordingly. Measure resource cost with an application mix that matches daily use, rather than treating one download task as representative of every scenario.

The trade-off between reliable byte streams and datagram recovery

A reliable byte stream preserves order and completeness, simplifying application development, while the transport retransmits lost data. But if earlier data has not arrived, later data may also wait: this is head-of-line blocking. When multiple web requests share one connection, a single lost packet can pause several resources at once. Datagram transport lets different data arrive more independently, allowing the upper layer to design more flexible recovery, but it requires more state and depends more on the quality of both client and server implementations.

Hysteria2 and TUIC often show their value in recovery and concurrency management on fluctuating paths. Shadowsocks, VMess, Trojan and VLESS must be judged together with their actual carriers; the protocol name alone cannot reveal the underlying behavior. If the client shows only the protocol name and not the transport, confirm it in the subscription details or client logs, but do not casually edit fields delivered by the subscription. Similar-looking configurations do not necessarily represent identical connection stacks.

Logs reveal more than whether a connection works

Client logs commonly record DNS resolution, dialing, handshake, authentication, routing and connection closure in sequence. During troubleshooting, the last successful stage and first failed stage are more useful than the error name alone. If resolution completes but dialing times out, check path and entry reachability; if the underlying connection succeeds but authentication fails, refresh the subscription and verify system time; if the connection succeeds but the app receives no traffic, check the system proxy, virtual-network permissions and routing rules. If logs contain subscription credentials, remove them before sharing to avoid exposing access tokens in public screenshots.

Resource problems can also be inferred from behavior. If the client produces extensive logs while idle, it may be stuck in a reconnect loop or experiencing repeated health-check failures; if the processor remains active after a network switch, an old connection may not have been released; if usage rises only when a particular app opens, that may relate to the app’s concurrency or data volume. Build a stage model first, then identify which layer the logs describe to narrow the investigation.

reference.mobile_energy

Mobile battery, background operation and network handoffs

Battery drain is not caused by encryption alone

Mobile battery behavior is shaped by processor work, wireless-module wakeups, background runtime, screen activity and app traffic. Protocol encryption is only one part of the picture. During sustained video, the wireless module is already active, so protocol differences may represent a limited share of total power use; during messaging sync or an idle connection with little traffic, frequent heartbeats, reconnects and network wakeups deserve more attention. Foreground heavy use and background idle time must therefore be compared separately.

If a connection repeatedly drops after the screen locks, the client may periodically redo DNS resolution, the handshake and route recovery. Each action may be inexpensive, but the cumulative cost can affect battery life. Some systems restrict background network extensions or place the client in a power-saving state, causing a brief loss of access after unlocking followed by automatic recovery. These symptoms are usually related to system background policy, client keepalive behavior and network handoffs, not necessarily a server failure.

iOS and Android impose different background limits

On iOS, connections are usually handled by a system network extension. After the app moves to the background, the extension process managed by the system handles the traffic. If the user force-quits the app, the system reclaims resources, or the network switches from Wi-Fi to cellular, the extension must recover according to system rules. During troubleshooting, first check the VPN status in system settings rather than relying only on the client icon. If the connection appears active but apps have no traffic, disconnect normally inside the client and reconnect so the system can rebuild the route.

Android devices vary more widely in background policy. System power saving, manufacturer battery management, background-data permissions and always-on VPN settings can all affect connectivity. If the client stops when the screen turns off, check whether background operation is allowed and whether VPN permission remains active. Granting the client an appropriate background allowance is more direct than repeatedly increasing protocol parameters. At the same time, do not disable the entire system power-saving function to fix one app; adjust only permissions related to the connection.

Network handoffs reveal a protocol’s recovery ability

When Wi-Fi changes to cellular service, the local address, default route and network interface all change. The existing connection may fail immediately, or may appear active briefly while no longer transferring data. A datagram protocol with connection migration or rapid recovery may feel smoother; a setup that depends on fixed connection state will usually need to reconnect. Whether the client listens for system network changes and promptly rebuilds the virtual interface also determines recovery quality.

When testing handoff behavior, do not watch only the connection icon. A more reliable method is to keep a normal page or stream active, then confirm after the switch that new requests continue, DNS results update and the old path is released. If the icon still says connected but all new requests stop, the control state and data path are out of sync. If manually disconnecting and reconnecting restores service, the client’s handling of network changes deserves attention rather than the account or plan.

Scenario to observe Main variables Common symptoms First action
Active foreground use Throughput, encryption, screen and wireless module Device heats up; battery use rises with traffic Compare route stability and protocol resource cost
Locked-screen idle Heartbeats, background permissions, reconnects Briefly unavailable after unlocking Check system background policy and connection recovery
Wi-Fi handoff Address, interface, default route Icon looks normal but data stops Rebuild the connection and check client logs
Movement with weak signal Jitter, packet loss, wireless wakeups Repeated buffering or reconnects Try a transport with stronger recovery and a nearer entry

Evaluate a complete usage cycle, not a single screenshot

Mobile battery statistics are easily affected by screen time, signal strength and app usage. A useful comparison should use similar everyday conditions: the same device, the same network area and a similar app mix, changing only the protocol or route. Record whether reconnects are frequent, whether the connection recovers after locking, and whether a network handoff requires manual action. Do not draw a permanent conclusion from one battery-settings ranking; background tasks and wireless-signal changes may matter more than the protocol itself.

VPN PY supports iOS and Android, as well as Windows / macOS / Linux. When using the same subscription across platforms, the best protocol does not have to be identical. Desktop use may favor sustained throughput, while mobile use places more emphasis on background recovery and network handoffs. Unlimited simultaneous devices let you keep client settings suited to each system, but subscription content should still come from one user panel to avoid long-term drift from manual configuration.

reference.route_topology

How direct, relay and dedicated routes change the path

Direct: a short path that depends on public interconnection

A direct route goes from the user’s network straight to the target server, with a simple structure and fewer intermediate steps. When the local carrier has good interconnection with the target data center, it may provide a relatively direct round trip and make the exit region easy to identify. The trade-off is greater dependence on public routing choices. Different carriers, cities and access methods can take entirely different international exits; variation between users on the same direct route is not contradictory.

Use direct routing as a baseline first. If it is stable during normal use, a streamlined protocol may be the natural choice; if jitter or throughput loss persists during peak hours, public interconnection may be the bottleneck. Switching among several protocols on the same exit is unlikely to help much because they still share a similar path. Compare different entries, relays or dedicated routes instead of cycling through protocol names.

Relay: enter nearby, then choose the onward path

A relay route divides the connection into two main sections: user to entry and entry to exit. The entry is usually closer to the user’s network, allowing traffic to converge on a controlled node before taking another path to the exit. Its value is not simply “adding a hop”; it places the least stable public-routing choice in a shorter section and makes the subsequent cross-border path easier to manage consistently. A good entry can reduce experience differences between local carriers.

Relays also add components. Entry load, entry-to-exit scheduling, queues on both sections and failover can all affect the result. If the entry is too far away, first-section latency still slows interaction even when the second section is stable; if the exit is congested, a relay cannot create capacity at the destination. Evaluate both entry and exit regions rather than looking only at the displayed country or city.

Dedicated: controlled paths and steadier peak-hour performance

A dedicated route generally connects entry and exit over a more controllable carrier, reducing the effect of public-interconnection changes on the core section. It suits office sessions, sustained video, remote desktops and uses sensitive to peak-hour stability. The goal is not the highest peak in one test, but a lower chance of sudden detours, congestion and jitter. A dedicated route still includes public-network sections from the user to the entry and from the exit to the target service, so the entry and exit still need to be chosen carefully.

If the local path to the entry already loses packets, a stable dedicated section cannot restore the experience of the first section. If the target service is busy, a dedicated route can only provide the path to the exit, not change the service’s condition. Judge its value by consistency across time periods, smooth interaction and the frequency of speed drops during sustained transfers, not by treating route type as an environment-independent rank.

direct

Direct

Fewer path segments and a useful baseline; results depend more on public interconnection between the local carrier and target data center.

relay

Relay

Enter through a nearby entry, then route to the exit; compare entry quality and the stability of the onward path.

private

Dedicated

A more controlled core section for connections that prioritize sustained stability and peak-hour performance.

Choose entry and exit separately

The entry determines which network segment the user joins first; the exit determines the region applications see and the distance over the latter part of the path to the target. For interactive apps, a nearby entry usually helps shorten the initial response; for regional content, the exit region must meet the service requirement; for cross-region work, also consider the distance from the exit to the business server. Treating entry and exit as one “node region” hides the most important structural detail of a relay route.

In practice, choose the exit first, then compare available entries. For content in Japan, the exit should be in the relevant region; if a direct path there is stable, use it; if it fluctuates during normal hours, compare a relay or dedicated route with a nearby entry. VPN PY covers 90+ countries / 200+ routes. Exact regions and route types are determined by the route list and the content delivered in the user panel. Choose routes around the intended use, not on the assumption that the nearest or most prominent name is always best.

reference.loss_congestion

What causes packet loss, jitter and peak-hour congestion

Packet loss does not mean the server is offline

Packets can be dropped at the wireless access point, local router, carrier aggregation layer, inter-carrier link, relay entry, exit network or before the target service. Brief loss may come from wireless interference, queue overflow or route changes; persistent loss is more likely to indicate signal quality, device load or link capacity. Even when the server remains online and answers some requests, retransmissions and waiting can make the app feel disconnected. A connection-status icon only shows that the control channel still exists; it does not prove that the data path is healthy.

Reliable transports retransmit lost packets and slow their sending rate in response to congestion. If loss occurs on a path with an already long queue, retransmitted data must queue again, producing both higher latency and lower throughput. Datagram designs can make recovery more flexible, but they cannot bypass a physical congestion bottleneck. Every protocol must operate within available capacity; the main differences are how it detects loss, adjusts sending and recovers useful data.

Jitter explains interactive lag better than average latency

Average latency combines fast and slow samples and can hide sudden pauses. Voice, remote desktops, games and real-time collaboration care more about whether adjacent packets arrive consistently. If most requests are fast but occasional waits are long, the average may still look normal while interaction feels poor. Video has buffer room and tolerates brief jitter better, but sustained jitter causes quality reductions or loading pauses.

When investigating jitter, first stop heavy local uploads and cloud synchronization. Once the upstream queue is full, acknowledgements and interactive requests wait even if downstream capacity remains, creating the pattern of apparently normal downloads but slow web clicks. An overloaded home router, wireless retransmissions and competition from other devices on the network can produce the same result. Rule out the local queue before deciding the problem lies on a cross-border route.

Peak-hour congestion usually occurs in shared segments

During peak hours, many users watch video, update files and sync to the cloud at once, making queues more likely in public access and inter-carrier links. Congestion may occur at the user’s carrier, near the exit or at the target service. If multiple exits and protocols slow at roughly the same time, local access or public interconnection is more suspect; if only routes under one entry slow, the entry or its upstream may be the common point; if only one target service is affected, inspect the path from the exit to that service.

Relay and dedicated routes can reduce some public-interconnection fluctuations through more controlled paths, but no route can guarantee that every segment remains uncongested. The right approach is to find the common failure domain: do the affected routes share an entry, exit, carrier or target app? Identifying the shared component reduces unproductive switching. Randomly changing nodes may restore service by chance and look like a permanent fix, but the same congestion will return.

Use basic tools to observe the path, not to chase one attractive number

On desktop systems, built-in tools can confirm DNS resolution, basic reachability and path changes. The example targets use publicly reserved domains and contain no subscription URLs or access credentials. Some servers do not answer diagnostic requests, so no response does not necessarily mean the app is unreachable; judge the result alongside actual web access, app connections and client logs.

ping example.com
traceroute example.com
nslookup example.com

Windows has a system path-tracing command, while macOS and Linux can use terminal tools. Focus on whether the path changes noticeably when the problem occurs, whether the first local hop is unstable, and whether resolution keeps changing. Do not label a router faulty simply because it does not answer diagnostic requests; an intermediate device may only assign diagnostic responses a lower priority. What matters is whether the later destination remains reachable and whether application data shows the same symptoms.

If the problem occurs only during peak hours, perform the same checks during normal and affected periods while keeping the device, network and target consistent. Comparisons matter more than absolute numbers. Record the entry, exit, protocol, network type and app symptoms to help support reproduce the issue. Account-related issues can be submitted through the user-panel ticket entry; remove usernames, subscription content and any tokens before sharing logs.

reference.scenario_select

Choose protocols and routes by use case

Web browsing, search and everyday apps: prioritize setup speed and reliable resolution

Web browsing consists of many short requests: the page, scripts, images and APIs may come from different domains. These scenarios care more about fast setup, consistent DNS resolution and whether one lost packet stalls concurrent requests. When the path is stable, straightforward combinations such as Shadowsocks, Trojan or VLESS are usually easy to manage; when the current network fluctuates, compare the recovery behavior of Hysteria2 or TUIC as well. Do not choose by protocol name alone. Check whether common sites load completely, whether the first visit is slow, and whether browsing pauses intermittently.

For routes, choose an exit near the target service first, then compare direct and relay paths. Web interaction is sensitive to entry distance, so a nearby entry often improves response time. If only one site is slow, changing countries may not help; the target service may simply respond poorly over a particular exit path. Comparing different exits in the same region is usually more informative than jumping across many regions.

Video and Streaming: sustained throughput matters more than peak speed

Video playback buffers ahead, so brief jitter may not be immediately visible, but insufficient sustained throughput triggers quality drops or pauses. First confirm that the exit region meets the content service’s requirements, then observe stability over a longer playback session. If direct routing remains stable during normal hours, keep the simpler path; if speed drops frequently at peak times, compare relay or dedicated routes. Datagram protocols may recover faster on fluctuating networks, but confirm that the local network handles datagram traffic well.

For regional libraries, routes and bandwidth considerations related to video, continue with Netflix regional libraries and bandwidth requirements. That article focuses on content regions and playback experience; this chapter addresses the technical relationship between protocols and paths. Test on the devices and networks used for everyday viewing rather than applying conclusions from a wired desktop connection directly to mobile devices.

Remote work and interactive connections: focus on jitter, recovery and path consistency

Remote desktops, terminal sessions, online meetings and collaborative documents require continuous interaction. Their average traffic may not be high, but they are sensitive to sudden pauses and reconnects. Prioritize a relay or dedicated route with low jitter and a consistent peak-hour path, with an entry near the current network. For protocols, stable and dependable traditional transports are easier to diagnose; if mobile work involves frequent network handoffs, compare options with rapid recovery.

Office use also requires attention to routing rules. Corporate intranets, local printers, LAN storage and international services may need different paths. If local resources become unavailable with a full-tunnel connection, the issue is usually routing policy rather than route quality. Confirm that the client supports bypassing the LAN or domain-based routing before choosing a protocol. Windows users can see Windows full-tunnel proxy and routing choices, while macOS users can read macOS network extensions and system permissions.

Mobile use and message sync: background recovery matters more than peak speed

A typical mobile cycle is opening an app briefly, locking the screen, changing networks and waking the device again. A high-throughput setup suited to desktop downloads may not provide the best mobile idle behavior. Check whether notifications recover after locking, whether new requests continue after switching between Wi-Fi and cellular service, and whether the client repeatedly reconnects. If a datagram protocol recovers smoothly on the current network, keep it as a candidate; if background power use or stability is poor, return to a combination that the system manages more reliably.

Do not overlook client quality in pursuit of one protocol. The system network extension, background permissions, subscription refresh and routing are implemented by the client. Windows / macOS / iOS / Android / Linux expose different system interfaces, so the same protocol can use resources and recover differently across platforms. A better approach is to choose a stable combination for each device and manage the subscription through one account.

Use case Primary metric Protocol focus Route focus
Web and everyday apps Connection setup, resolution, concurrent response Straightforward structure or fluctuating-path recovery Nearby entry, stable exit
Video and Streaming Sustained throughput, regional fit Packet-loss recovery and long transfers Matching exit, relay or dedicated route
Remote work Jitter, session persistence, routing Stable transport and network recovery Consistent path, nearby entry
Mobile message sync Background recovery, network handoffs, power use Client implementation and connection migration Nearby entry, fewer path changes
File transfers Sustained throughput and retransmission efficiency Congestion control, packet-loss recovery Capacity-stable relay or dedicated route

Plan selection and protocol selection are separate decisions

The protocol determines how the connection works; the plan determines available traffic and service duration. Do not conflate them. VPN PY monthly plans are ¥9.9/month with 60GB, ¥18/month with 250GB, and ¥28/month with 500GB. Traffic resets monthly on the activation date, and mid-cycle upgrades are prorated by the remaining days. Traffic packs are ¥158/300GB, ¥358/1000GB and ¥658/3000GB; they remain available until used and never expire. See the plans page for details.

No email address is required for registration; a username and password are enough. Payment methods include Alipay / WeChat / USDT. Plans support unlimited simultaneous devices and include a 7-day no-questions-asked refund. These terms cover account, traffic and device management; they do not guarantee identical protocol performance on every network. After choosing a plan, select the protocol and route on your actual devices and usual networks using the method in this chapter.

reference.diagnostic_flow

Build a repeatable selection and troubleshooting process

Start with the smallest workable path

For first-time setup or recovery, reduce the variables first. Choose a reasonably close exit for a clear purpose, use the protocol and routing settings imported by default from the client, disable unnecessary custom rules, and confirm that ordinary web pages load. Once the minimal path works, add split routing, a specific regional exit or always-on background use step by step. If something then breaks, you can identify which step introduced the change. Changing the protocol, DNS, routes and system proxy all at once makes every error harder to locate.

First-time users can follow the Guides to register, choose a plan, retrieve a subscription and import it. No email address is required; a username and password are enough. Subscription and client access come from the user panel, and configurations should not be copied from unknown sources. If no routes appear after import, refresh the subscription and check the account status; if routes appear but the connection cannot be established, continue with protocol and path troubleshooting.

Narrow the problem by its scope

If only one app is affected, first check whether it uses a separate proxy, special DNS resolution or regional restrictions. If every app is affected, check the system connection, client routing and route. If only one device is affected, compare its client, permissions and network with other devices; if all devices fail on the same network, check the local router and carrier path; if the same account fails across different networks, then consider subscription status, nodes or the service side.

Protocol troubleshooting follows the same principle. If every protocol on one route fails, the route or entry is more suspect; if only one protocol fails, check client support, subscription fields, system time and its transport; if a datagram protocol fails while a traditional reliable transport works, examine how the current network handles datagram paths; if the connection succeeds but only high-volume tasks slow down, inspect congestion, retransmissions and exit capacity.

Save context, not just an error screenshot

A single error dialog is rarely enough to reproduce a problem. Useful records include the device platform, client type, current network, entry region, exit region, protocol name, whether the issue occurred before connection or during transfer, and whether only a specific app was affected. If timing matters, note the difference between normal and affected periods. Keep a short log segment from connection start through failure, but remove usernames, subscription URLs, tokens and other account information before sharing.

If switching routes restores service, record the similarities and differences between the old and new routes. Did they share an exit? Did the setup change from direct to relay? Was the entry closer to the local network? Did the protocol change at the same time? Only by separating variables does the recovery result become useful. Random switching may solve a problem temporarily, but it does not create a reusable method for next time.

Selection conclusions should be updated as the network changes

Network paths are not static assets. Local-carrier routing, wireless conditions, entry scheduling and target services can all change. A region that works well with direct routing today may suit a relay better later; a protocol that performs well on desktop may need to be replaced for mobile background use. A sound conclusion should say, “This combination is more stable on this device, network and use case right now,” rather than turning one result into a permanent ranking.

Periodic review does not require complex testing. Observe connection setup, sustained transfers, recovery after locking and peak-hour performance in your usual scenarios. When everything works, there is no need to switch constantly; when a problem repeats, compare one variable at a time. A large route count provides alternatives, not a requirement to search for a new fastest route every day. VPN PY offers 90+ countries / 200+ routes; filter them by use case, with exact availability shown in the user panel and the route list.

When to submit a support request

If the same authentication failure occurs across different devices, local networks and multiple routes, or if a subscription refresh still provides no usable routes, submit the issue through the user-panel ticket entry. If only a particular route remains faulty across multiple networks, include its name, platform, protocol and failure stage to help identify the common failure domain. When contact details are not stated in the available facts, do not look for supposed support accounts on third-party pages; use the official on-site entry only.

Before submitting, complete a final check: confirm that the client came from the user-panel entry, fetch the subscription again, verify automatic system-time synchronization, confirm that system VPN or network-extension permissions are active, check that the local network can access ordinary websites, and close other network tools that may conflict. These basics make the request more focused and easier to reproduce. If you only want to compare usage, see plans and traffic packs; for platform steps, read the Windows first-run setup guide or common beginner questions.

selection.summary

Final decision order

First define what the application needs, then choose the exit region; first decide between direct, relay and dedicated routing, then compare transports and protocols; first locate whether setup or data transfer failed, then inspect the corresponding layer. The protocol name is the entry point, the route is the foundation of the experience, and client and system behavior determine whether those capabilities remain reliable.