The facial recognition has not been working on my phone for a really long time. Everytime I unlock my phone on the top it says, if this happens again, restart your phone. but it has done this for as long as I can remember. I tried resetting the face data and cache but it didnt work. Someone please help me make it work.
I would recommend testing your device in safe mode. If your phone is misbehaving, it's possible that a third-party app is causing the issue. To figure out what app is acting funny, you can use the Safe Mode feature. In Safe Mode, your phone won't run any third-party apps. This allows you to easily identity and remove the app that may be causing the problem. Give this link a try: https://www.samsung.com/us/support/answer/ANS00062983/
Next step would be to wipe the cache partition on your device. The system cache partition stores temporary system data. It's supposed to allow the system to access apps more quickly and efficiently, but sometimes things get cluttered and outdated, so a periodic cache clearing can help make the system run more smoothly. Give these steps a try: