Choosing an Android VPN means looking beyond whether webpages load while the screen is on. Background reliability determines whether the connection survives a locked screen, battery settings can restrict the client, and per-app proxy controls which apps use the tunnel. Here, “testing” means repeatable checks you can run on your own device—not unverified device rankings, battery measurements or speed-test claims.
How to choose an Android VPN: check background behavior and app routing
Android proxy clients typically use the system VPN interface to route traffic, but granting connection access doesn’t mean every app or domain uses the remote route. The actual path also depends on per-app selections, routing rules, DNS settings and whether the client keeps running in the background. The service’s routes and the local client are separate parts of the setup; a client closing isn’t necessarily a route problem.
6NVPN monthly plans are ¥9.9/60GB, ¥18/250GB and ¥28/500GB. They allow unlimited simultaneous devices and include a 7-day no-questions-asked refund. After checking the price, also verify client compatibility and background behavior. Unlimited devices doesn’t mean each one gets a separate data allowance; test the service on your own devices and network to see if it suits your needs.
| What to check | What to look for | How to test it |
|---|---|---|
| Background operation | Uses a foreground service while connected and shows connection status | After locking the screen, reopen the same app and check whether you need to reconnect manually |
| Per-app proxy | Clearly distinguishes between proxying selected apps and excluding selected apps | Test apps both on and off the list—not just your browser |
| Subscription compatibility | Supports the subscription formats and protocols offered by the service | After importing, check that nodes, rules and DNS settings are all present |
| Network switching | Can restore the connection after the network changes | Switch between Wi-Fi and mobile data, then check whether a new connection can be established |
| Troubleshooting | Lets you view local connection errors and rule matches | Distinguishes connection failures, DNS resolution failures and rules that send traffic direct |
Keep the VPN running in the background: check system restrictions one by one
While connected, the client usually needs a foreground service to keep the tunnel running. Battery saver, background restrictions and manufacturer task-killing policies can still interfere. A connection icon doesn’t guarantee the remote session is working; if the icon disappears, first check whether the process was stopped rather than repeatedly switching nodes.
Settings paths vary by Android version and manufacturer. Open the app’s details and look under battery or background settings for options such as “Unrestricted” or “Allow background activity.” Some devices also offer auto-start management or a lock for apps in the recent-apps screen. These are separate controls, and locking an app in recent apps doesn’t guarantee the system won’t stop it.
- Open the client’s app details and check whether background activity is restricted. Adjust this client only; don’t remove restrictions for every app at once.
- Make sure background data is allowed, and check whether Data Saver restricts the client’s network access. Check network and battery restrictions separately.
- After connecting, return to the home screen without manually closing the client. Lock the screen for roughly as long as you would in everyday use, then test the same app.
- If the connection still drops, note the battery mode, network type and client status. Then adjust auto-start or the manufacturer’s background-management settings separately.
- Restart the device and check whether the client reconnects. If auto-start is off, needing to connect manually after startup isn’t necessarily a fault.
Battery life testing: change one variable at a time
Android’s idle policies reduce background network activity, but using a VPN doesn’t automatically cause severe battery drain. Signal strength, app syncing, ongoing downloads, frequent reconnects and device temperature can all affect battery use. A single percentage on the battery screen can also make foreground use look like tunnel-related drain.
To establish a baseline, keep the network, screen brightness and app activity consistent. Note the battery level, client background activity and any unusual heat before and after connecting. Then change only the background restriction setting and repeat the same steps. Don’t also switch nodes or protocols or update rules; otherwise, even if things improve, you won’t know which change made the difference.
Include the return to normal use in your screen-lock test: unlock the device, open the original app, then load a new page. Old content may come from cache, so it doesn’t prove the connection is still working. If a burst of notifications arrives after unlocking, the app’s own background restrictions may be involved. If the client is running normally but one app is slow to receive messages, check that app’s battery settings too.
What to do: Prioritize a stable connection, then restrict unnecessary background activity. If the client keeps reconnecting, investigate the network and system restrictions first; reducing background activity isn’t a one-size-fits-all battery fix.
Per-app proxy: app lists and routing rules are different
Per-app proxy features commonly offer two modes: “Proxy selected apps” excludes apps not on the list from the VPN; “Bypass selected apps” excludes listed apps. Read what the checkboxes mean before changing them. Some clients require you to reconnect the VPN after editing the list, and existing app sessions may need to restart before you see the change.
Once an app enters the VPN, domain or IP rules may still determine whether its traffic goes direct, through the proxy or is blocked. So selecting an app doesn’t mean all its requests go to the remote server. “Global mode” also varies across clients; don’t assume it overrides app exclusions set at the system level.
- ✅ Add apps that need international routes to a test list, then check sign-in, content loading and core features separately.
- ✅ Exclude local-service apps from the proxy if needed, and check whether their sign-in pages open in a different browser.
- ✅ After changing the list, reconnect the client, close the target app’s existing session and test again.
- ❌ Don’t treat your browser’s exit IP as proof that every app uses the proxy.
- ❌ Don’t mistake a rule that sends traffic direct for a failed route, and don’t repeatedly reimport the subscription to overwrite each setting.
Third-party sign-in, system downloads and embedded webpages may use different components. If the main app opens but sign-in fails, check whether the component hosting the sign-in page takes a different route. Apps in a work profile may also be managed separately; the app list in your personal profile doesn’t necessarily reflect work-profile behavior.
Clients and subscriptions: format compatibility matters more than the name
A subscription link lets a client fetch nodes or configuration; it’s not an app installer or an ordinary URL to share publicly. Get the link from your user panel, then choose the subscription or configuration import option in your client. After importing, check the update time, node list and error messages. Seeing nodes doesn’t guarantee that every imported setting is compatible.
Shadowsocks, VMess, Trojan, VLESS, Hysteria2 and TUIC are different protocols; changing a name won’t make them interchangeable. Check whether the client’s core supports the protocol, transport and subscription format separately. Configuration conversion can alter fields or rules, so don’t hand a private subscription to an unfamiliar online conversion service.
Hysteria2 and TUIC use QUIC, and how a network handles UDP can affect connection behavior. Performance with Trojan, VLESS and other protocols also depends on the specific transport configuration. A protocol’s name doesn’t tell you how much battery it uses. Check 6NVPN’s routes and protocols in the Routes and protocols guide; for import instructions, see the Guides.
Android relies on background services and system VPN authorization; Windows often uses a system proxy and virtual network adapter, while iOS manages connections through its network extension framework. A mode with the same name on another platform may not behave the same way on Android. Choose a client based on the per-app, DNS and background options available in its Android version.
Troubleshooting screen-lock disconnects: check exit IP, DNS and routes separately
For a consistent test, keep the node and rules fixed. Visit the IP lookup page and note the browser’s exit IP, then lock the screen, unlock it and reload the page. If the exit IP differs from what you expect, first check whether the browser is included in the proxy rules. A webpage’s location result may also come from a geolocation database, so a city name alone doesn’t prove the route is wrong.
A DNS leak means DNS requests are taking an unintended path; it doesn’t simply mean the DNS location differs from the exit location. Public DNS providers may use infrastructure in different places, and browser Secure DNS, Android Private DNS and client DNS can all be active at once. Check the client’s DNS and routing settings together rather than treating an unfamiliar resolver name as proof of a leak.
If only one app fails, check split tunneling, DNS resolution and account-region restrictions first. If every app fails, check the tunnel, node and local network. An existing connection may briefly stop working when switching from Wi-Fi to mobile data; test recovery with a new request rather than expecting the existing session to carry on unchanged.
Direct, relay and IEPL describe route paths or transmission methods, not Android background permissions. A direct route connects from the local network to the destination node; a relay adds a forwarding hop, while IEPL is a dedicated-line transport type. None can prevent the system from stopping the client. Availability and performance still depend on the network and route implementation—“dedicated line” isn’t a promise of uninterrupted service.
Everyday use: choose based on your own needs
If you mainly browse or use utility apps, favor a client with clear rules and easy-to-check per-app settings. If you often lock your screen while waiting for messages, test background recovery. If you switch networks frequently, watch how it reconnects and handles new requests. Keep test notes to the scenario, setting changes and results; don’t send anyone your full subscription link or logs containing credentials.
Bottom line: There’s no single Android VPN ranking that applies to every device and network. Check subscription compatibility, then test background reliability, screen-lock recovery and per-app routing before comparing battery use. A setup that lets you trace traffic and reproduce problems is more useful than a speed test with the screen on.
6NVPN keeps no logs and doesn’t require an email address. Create an account with a username and password. These details explain the service’s policies and sign-up requirements; they don’t replace device-side checks. Check the plans page for data allowances and billing details, then follow the steps in this guide to see whether the connection behaves as expected.