Solution for iPhone 6s Fingerprint not working
Troubleshooting Steps
The only restriction is that your iPhone with iOS installed should be up to date. Touch ID Might Be Getting Jammed by an Old Software
Wipe your fingers and the Touch ID attract. Clean with a soft, lint-free cloth Keep your fingers dry when applying Touch ID.
Check your Touch ID settings. Open Settings >
Touch ID & Passcode, then turn on iPhone Unlock or i Tunes & App Store. Make sure you have at least one fingerprint added
Register a different finger instead. In practice, the sensor occasionally isn’t able to register one of your fingers because your skin has become uneven, you touch the sensor in a different way etc.
Take off any cases or screen protectors Some coverings can disrupt the function of canceling through the Touch ID sensor. Well you are testing it so keep the view clear of any obstacles.
Force restart your iPhone. Quickly press and release the Volume Up button, Quickly press and wait for the volume down button to Quick Press 1 times again too After releasing you should continue holding the power-side until apple appears.
Reset all settings. Navigate to Settings > General > Reset All Settings.iphone 6s touch id not working (ad) This effectively resets your network settings, location settings etc without wiping any data.
Contact Apple Support. If the issue still persists, you could have a hardware problem so let us know! You will have to take it to an Apple Store or authorized service provider.