Galaxy S5 won't remember wifi passwords
I recently had to send my phone Galaxy S5 to Samsung for a screen repair. When I got it back it will no longer remember any wifi passwords consistently. Sometimes it does for awhile, but then I discover I've been using data for days at a time when I thought I was on wifi. I have just turned off the Smart Network Switch as I have found other posts about older versions of the Galaxy having this same issue, but I'll have to wait and see if this works. This is happening with mulitple routers, not just my home wifi. It is very irritating. Is there any way to fix this?
The other things that changed when my phone was repaired is the "Security notices" notifications that I now get 100 times a day. "Unauthorized actions have been detected... Restart to undo any unauthorized changes". There aren't any unauthorized actions, how do I shut off the notifications?
As far as I know all Samsung did was restore factory setting to wipe out all of my personal information. I don't know why these new issues popped up after that. Thanks for the help!