Samsung A51

[saxonian]

My Samsung will not installed the latest system updates. This is the second time as it has already been returned for repair. Any one else having this problem? What can I do?

[Cleoriff]

@saxonian 

If it's already been sent for repair for the same issue, then it's obvious it hasn't been fixed.

You'll need to call O2 again

Numbers here Guide: Coronavirus Community Help and Support 

Advice from an O2 Guru regarding a way to get through:

If you call 202, when it comes to the reason you are calling stay silent for 15 seconds and you will be taken to the keypad options.

Press 2 for Everything Else

Press 5 for More Options

Press 7 for Anything Else which will put you though to an advisor.

Press Upgrade, Lost/Stolen if you have to.

[MI5]

@saxonian 

First thing to try would be to do a full back up then factory reset the phone.