Issue with always on display

[Jasrobin]

Need help regarding always on display.. it keep going back to default setting" tap to showing" I did restart and wipe cache partition and reset all setting too. 

[Tallman]

Try clear the app cache and data

Open Settings → Apps → Show System apps → AlwaysOnDisplay → Storage

Clear data and clear cache

See if this help.

[Brantley]

Hi Jasrobin ,If your phone is misbehaving, it's possible that a third-party app is causing the issue. To figure out what app is causing the issue, you can perform Safe Mode. 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.

Important: When you exit Safe mode, some of your customization options (wallpapers, themes, etc.) may be reset to default.

1. First, completely power off the phone or tablet.

2. Power on the device and when the Samsung logo appears, press and hold the Volume down key.

3. If done correctly, "Safe mode" will display on the bottom left corner of the screen. If "Safe mode" does not appear, repeat the steps above.

4. Once you're in Safe mode, you can remove the third-party app that is causing issues.

5. To exit Safe mode, simply restart your phone or tablet and it will reboot normally.

You can also enter Safe mode by opening the Power menu, touching and holding the Power off icon, and then tapping the Safe mode icon.