How to Fix Telegram Calls Not Working on Mobile Data or Wi-Fi?

Telegram calls can fail even while the app still looks online. A call may hang on Connecting, stall at Exchanging Encryption Keys, ring once and drop, or work on Wi-Fi but fail on mobile data.

That mismatch is the key clue. Chats may continue to load, but the real-time call path can still fail because of proxy routing, peer-to-peer negotiation, phone-level data restrictions, or stale app state.

The checks below isolate each layer quickly without jumping straight to reinstalling Telegram.

1. Turn Off Proxy Routing for Calls and Compare Wi-Fi with Mobile Data

Start by removing routing variables. Telegram proxy settings and device-level VPNs can interfere with call setup on specific networks even when regular messaging still works.

Use the same contact for both tests so the only change is the network path.

1. Open Telegram > Settings > Data and Storage > Proxy and disable any active proxy. If you see Use Proxy for Calls, disable that too for this test.

   

2. Turn off any device-level VPN temporarily.
   
3. Call the same contact once on Wi-Fi, then switch to mobile data and call again.

   

4. If only one Wi-Fi network fails, reconnect once or restart that router before changing more Telegram settings.

If one path works and the other fails, you have already narrowed this to network routing, not a fully broken app. If both paths fail in the same way, continue below.

2. Change Telegram’s Peer-to-Peer Call Setting When Calls Stall at Connecting or Key Exchange

Telegram uses peer-to-peer routing when possible. On some NAT or firewall setups, direct negotiation fails and calls stall at Connecting, Requesting, or Exchanging Encryption Keys.

Temporarily forcing relay routing is a clean test for this behavior.

1. Open Telegram > Settings > Privacy and Security > Calls.
2. Set Peer-to-Peer Calls to Nobody and place a test call.

   

3. Wait long enough to confirm whether the call now gets past the connection phase consistently.

If this helps, keep the setting. If it does not help or makes calls worse, restore the original value and continue.

3. Remove Mobile-Data, Data-Saver, and Battery Restrictions on the Phone

Telegram’s FAQ still warns about battery-saving interference, especially on Android. Calls are usually affected before chat loading because live call traffic depends on stable background activity.

The target here is simple: allow Telegram to use data freely and avoid aggressive battery throttling.

1. On Android, open Settings > Apps > Telegram and allow Mobile data, Background data, and Unrestricted data usage where available.

   

2. Still on Android, open Battery for Telegram and set it to Unrestricted or the least restrictive option your device offers. If your phone has an OEM security app, whitelist Telegram there too.

   

3. On iPhone, go to Settings > Cellular and make sure Telegram is allowed to use mobile data.

   

4. Reopen Telegram and retry the same call on the network that was failing.

If calls start working after these changes, phone-level restrictions were part of the problem. If both Wi-Fi and mobile data still fail, reset local session state next.

4. Reset the Network Session and Rebuild Telegram’s Local Call State

Sometimes routing and permissions are correct, but the app is stuck in bad local state. A short network reset plus app relaunch often clears this without touching account data.

1. Turn on Airplane Mode for 10 to 15 seconds, then turn it off.

   

2. Force close Telegram from the recent apps screen and reopen it.
3. If Telegram still hangs on connection, open Settings > Data and Storage > Storage Usage and clear cache.

   

4. Retry the same call on the same network after the app fully reloads.

If the call starts working now, the failure was local to that app session. If it still fails across both network types, check for app-build regression.

5. Update Telegram and Test the Same Call from Another Device

Telegram has had call regressions in past builds. When call failure appears suddenly and survives all local fixes, test against app version and device.

1. Open the App Store or Play Store and install any available Telegram update.

   

2. If possible, place the same call from another phone or tablet using the same account, or call the same contact from another network.
3. If one device works and the original phone still fails, keep troubleshooting the original phone rather than treating it as a Telegram-wide outage.
4. If the same failure persists across devices and both network types, report it from Telegram > Settings > Ask a Question or the support path in your build.

   

If one change finally makes the call connect, note exactly what changed. That one detail usually makes the next Telegram call failure much faster to resolve.