Disappearing Keyboard

[dpeat]

What is causing the keyboard to disappear from the s21 screen. Only solution is to reboot the phone. 

[Kaler]

For me it doesn't even come after the reboot sometimes. My back button also stops working whenever my keyboard isnt showing.

[Valeriya]

Hi dpeat, I suggest you to try the steps below for clear cache and clear data

1. Empty your phone's cache memory.

To clear the cache, go to Settings, drag to and tap on Apps. Go to the app you want to erase and tap it. Tap Storage, then Clear Cache.

2. If that doesn't work, tap "Clear Data" (Note: this will erase all app data on your phone and you will need to log back in).