No fingerprint

It is possible that certain Android devices don't show the possibility to unlock Telegram with the fingerprint in the Passcode settings.

This is a combination of the Telegram developers decision (by design) and Google's decision: The official Telegram client supports only official Android APIs, managed by Google. So if you do not see the fingerprint option in the Telegram Settings, this is happening because your device may not pass the Android CTS. In this case, Google will not allow you to use specific features, especially security features like the fingerprint reader - even if the device has all the hardware necessary for the feature embedding, and even if other apps use this hardware.

Known devices with issues

  • Samsung sm N910f
  • Samsung sm G900f