Hi all,

I have an S21 FE 5G. It was great, have loved it for a few of years now.

As of a few weeks ago, I was getting roughly 1.5 days battery out of it, on 5.1.

I then upgraded to 6.1, then 7 as I was told the battery usage issue was fixed.

However, I am lucky to get a half a day, maybe 3/4 of a day out of the phone now. All the AI stuff is turned off (as I have not given it permission to run), and this is unacceptable.

So, rant over... :-)

Has anyone been successful? I know it will fully erase everything. That is fine. I have my own backups etc. I just want to see if it's trouble free, and if I can go back to 5.1?

Thanks so much.