Why does the SMS feature use mobile data instead of my SIM?

My call duration seems incorrect.

There may be a small sync delay between local and server records, but billing always reflects the exact connected duration.

The call volume is too low.

Increase your in-call and system volume levels. If still low, plug in earphones for clearer output.

My balance reduced twice for one call.

It’s usually a sync delay from dual connection attempts. Your account auto-adjusts within 24 hours; refresh to see the correct balance.

App says ‘Call Failed’ every time I try.

Try the following steps:

1. Restart your device.
2. Verify number format and balance.
3. Clear app cache or reinstall to remove outdated routing files.