When choosing an Android VPN, first check whether the connection stays active with the screen locked, then consider whether per-app routing fits your everyday needs. Background reliability, battery settings and power use all affect one another, so a successful connection alone is not enough to judge an app. This guide compares client features and provides repeatable tests without turning unmeasured battery data into rankings.
How to choose: If you want fewer settings to manage, first check how well a service's companion client is maintained and how easy it is to import its configuration. If you need granular traffic routing, check the rule-based client's app selection, DNS paths and configuration compatibility. Whichever type you choose, test screen-lock behavior, network switching and app traffic on your own Android device.
Android disconnections: distinguish background shutdowns from route issues
Android clients usually create a virtual network tunnel through the system VPN service interface. The related service needs to keep running to receive app traffic and forward it according to the configuration. A VPN icon in the status bar only indicates that the system has a corresponding connection; it does not confirm that the destination website, proxy node or DNS resolution is working properly.
If access stops after the screen locks but returns when you wake the client, first check battery optimization, background activity limits and the device maker's app-cleanup settings. If the client is still running but its logs repeatedly report connection failures, look at the current network, node and protocol configuration. If only one app fails, the cause is more likely to involve traffic routing, the app's own DNS settings or its account region.
Switching between Wi-Fi and mobile data also changes the underlying connection. Whether the client recovers depends on its reconnection logic, protocol implementation and restrictions on the new network. Don't start by switching nodes repeatedly. First check the client process, system VPN status and target app state at the time the issue occurs.
Comparing clients: features matter more than category labels
Common Android options include service companion clients, general-purpose protocol clients and rule-based clients. These categories can overlap: a companion client may support complex rules, while a general-purpose client may let you exclude apps. The table below lists differences to verify when choosing a client; it does not report performance test results for any unspecified software.
| What to check | Service companion client | General-purpose protocol client | Rule-based client |
|---|---|---|---|
| Import and updates | Check whether the panel provides a compatible configuration and usage instructions | Check subscription format, protocol and transport parameter compatibility | Also check rules, policy groups and DNS settings |
| Background reliability | Check foreground service notifications and automatic reconnection settings | Check background services and behavior when networks change | Also check for issues after configuration updates |
| Per-app routing | Check support in the current version | Check whether the app list includes or excludes selected apps | Check how app selection interacts with domain rules |
| What to watch for in battery use | Reconnection frequency, background activity and actual traffic | Protocol implementation, connection maintenance and logging settings | Rule processing, DNS requests and update tasks |
| Best suited to | Users who want a more streamlined setup | Users who want to choose a compatible connection tool | Users who need to route traffic by app and destination |
Shadowsocks, VMess, Trojan, VLESS, Hysteria2 and TUIC are different proxy protocols or protocol families, not Android background-permission solutions. A listed protocol name does not guarantee support for every option in a subscription; the transport method, TLS parameters and client implementation must all match. Hysteria2 and TUIC use QUIC-based transport. Network restrictions on UDP can affect connections, but that does not mean either protocol will use less battery or be more stable on every device.
Background reliability and battery settings: make targeted changes
First connect the client normally and confirm that system VPN permission has been granted. Then check the app info page for battery and background settings. Menu names and locations vary across Android versions. Common options include allowing background activity, removing battery restrictions and using the device maker's autostart manager. Adjust settings for the client rather than disabling all power-saving features on the device.
- Confirm that the client shows a connected status and that the system VPN icon remains visible. If the client provides a foreground service notification, keep the necessary settings enabled as its documentation recommends. The notification's visibility alone does not prove that the service is still running.
- Check the client's battery optimization status. First relax background restrictions for that app, then check the connection with the screen locked. Avoid changing several unrelated settings at once.
- If the system has a separate autostart or background-cleanup list, use the device instructions to allow the client to run. Locking the app in the recent-apps screen is a device-maker feature and does not replace checking system permissions.
- Restart the device and check whether you need to open the client manually. Autostart support does not guarantee that the connection will resume automatically in every system environment.
Other tools that use the system VPN interface can also affect connectivity, including some firewalls and local filtering apps. If the client is repeatedly replaced, check whether one of these tools is running before assuming the route is at fault.
Per-app routing: check the rules after selecting apps
Per-app routing usually works with either an allowlist or a blocklist. The first sends only selected apps' traffic through the VPN tunnel; the second lets selected apps bypass the tunnel. The labels may sound similar, but the behavior is opposite. Start with a browser as a test case, confirm what the list means, then set up your everyday apps.
After app traffic enters the tunnel, domain, destination or policy-group rules may route it directly or through a proxy. So “the browser is on the proxy list” does not mean “all browser requests go through a remote node.” Check how app selection relates to routing rules; if the client asks you to rebuild the connection after a change, follow its prompt.
DNS cannot be assessed with a single global toggle either. A client may use system resolution, a built-in resolver or remote resolution, while a browser may enable its own encrypted DNS. If you see a local DNS result, first check whether the configuration intentionally uses local DNS for direct connections. Investigate possible leaks further only if the actual path does not match your expectations.
- ✅ First confirm whether the app list means “proxy selected apps only” or “do not proxy selected apps.”
- ✅ After connecting, check the expected proxy apps' exit route, then confirm expected direct-connection apps still work.
- ✅ Check the client's DNS settings and the browser's encrypted DNS, and understand the actual path each uses.
- ❌ Don't treat the system VPN icon as proof that every app is using the proxy.
- ❌ Don't use account region, cached content or page language as the sole indicator of the exit location.
Testing method: compare screen lock, network switching and battery use separately
A useful comparison keeps conditions as consistent as possible. Record the device OS, client version, node, protocol, routing configuration and current network. Use the same app tasks and observation period, and keep screen brightness, charging status and background apps as consistent as possible. Don't compare battery drain from playing video in one client with leaving another client idle.
First, test recovery after locking the screen
After connecting, open the target app and confirm that requests succeed. Then lock the screen and let the device enter its usual idle state. After unlocking, use the target app directly without opening the VPN client first. Record whether it works, whether the system icon remains and whether you must return to the client to restore access. The last point can indicate background restrictions, but should still be checked against the logs.
Next, test network switching
In the same target app, observe recovery when switching between Wi-Fi and mobile data. Note whether the client reconnects automatically, needs a manual reconnect or fails only with the current node. If failures occur on one type of network, compare with another compatible node or protocol instead of attributing everything to background cleanup.
Finally, monitor battery use and unusual activity
The system battery page usually shows estimated app usage or a percentage, not precision power measurements. Consider it alongside actual traffic, background activity and repeated reconnection attempts. A rule-based client does not necessarily use more battery, and a simpler client may use more if it keeps retrying. Without records made under comparable conditions, a battery-saving ranking is not meaningful.
How to interpret the results: If access fails only after the screen locks, check background restrictions first. If it fails only after switching networks, check reconnection and network compatibility. If only certain apps have issues, check the app list, rules and DNS. Assess battery drain from sustained traffic or repeated retries separately from idle use.
Subscription import and route selection: keep separate issues separate
A subscription link provides nodes and related configuration to a client and usually contains access credentials, so protect it like a password. GMTVPN's client download entry is in the user panel; sign in to get the subscription. Before importing, check which subscription formats the client supports. A successful node-list import does not mean that routing rules and DNS settings were imported correctly.
After updating a subscription, check that nodes appear, the selected policy works and requests can actually be made. Don't share a full subscription link or logs containing credentials when troubleshooting. To report an issue, use a panel ticket and include the OS, client version, steps to reproduce and error details with sensitive information removed.
Keep route-level issues separate from Android background issues. An IEPL dedicated line describes how a private line carries traffic; a relay usually passes through an entry point before reaching an exit; a direct route usually connects the client straight to the remote entry point. Check the service documentation for the actual path. A route name alone cannot guarantee battery use, latency or screen-lock stability on a particular Android device. A working route also cannot stop the system from ending the client process.
For more about route concepts, see the protocol and routing reference. Installation and connection instructions are in the guides. Check each platform separately: desktop routing rules and background behavior do not necessarily apply to Android, and iOS client capabilities are also affected by its system design.
Choosing a client: recommendations by use case
If you want reliable access for your everyday apps, start with a client that has clear documentation, smooth subscription imports and background settings you can verify. Passing screen-lock and network-switching tests on your own device is more useful than a feature list. If you want local apps to stay on a direct connection, focus on the per-app list and domain rules instead of enabling every advanced option by default.
GMTVPN monthly subscriptions reset traffic each month on the activation date. Traffic packages never expire, and there is no device limit. Compare plans based on how often you use the service and how much traffic you need; see the plans page for current plans and prices. No email address is required; a username and password are enough to create an account. The refund policy offers a “30-day, no-questions-asked refund”; check the full terms before use.
Keep a restorable record of your configuration: the current node, proxy mode, app list and DNS selection. When a problem occurs, change one factor at a time and repeat the same test. That makes it possible to tell whether an improvement came from background permissions, routing changes or a different route, rather than treating a temporary recovery as a lasting result.