One ui 4.1 update on s21 ultra causes home button and back button to not work

[MrEllison]

Well I recently updated to one ui 4.1 and I cannot use the home or back button. It was working perfectly fine before the update. 

[MsBBros]

this worked on my phone.  thank you so much!  saved me an hour + plus to go to tech repair.

[joshcorum]

This worked for me. Thank you!

[userxqr4bQJNZ2]

Thanks.  Your solution worked for me.

[imhines9192]

No problem with mine yet.

[DazedLogic]

Same here. Home button and back button not working after the update. Also my phone is being laggy. Will talk to tech support tomorrow. S21 Ultra annoying. Lol

[userVJhypjCEB2]

I thought it was just me . My button works but it doesn't go home. It just doesn't do anything if I long hold I can set it to settings and Google but it doesn't take me back home

[DazedLogic]

So what seems to have 'fixed' this: I went into Settings-->Apps-->Choose Default Apps and set the home app to Nova7 (or OneUI, whatever you use). I thought it was strange that Mobile Services Manager was showing, so I wanted to disable it, but was unable to. What I did do was go to Settings-->Apps-->Mobile Services Manager and hit Force Stop, and then went into Storage and Clear Data. I then went back to Settings-->Apps-->Mobile Services Manager and removed the permission to access the Phone.

[userVJhypjCEB2]

Ty wow it worked

[Devildog]

^ mine didn't work with that, I cleared the data and cache for one ui and mobile manager services.

[userjJfFbSOQ2m]

Thank you so much! This worked for my wife's phone! The only thing I did different was I turned the phone permissions back on to the mobile services manager. But the home and back buttons are working fine now!