Hi, we'd request you follow the below steps:
1. Clear system cache.
2. Kindly update all the apps to their latest version.
3. Please try to enter "Safe Mode". If the function works well in Safe Mode yet the issue remains out of Safe Mode, please check for any disturbance from the installed 3rd party apps.
# How to enter and exit "Safe Mode"https://www.asus.com/support/FAQ/1005163/
4. If still you face the issue factory reset your phone after
taking a full backup: https://www.asus.com/support/FAQ/1006346/