Recently I've been having a LOT of trouble with my galaxy S3 LTE. For over a year it's been fine other than a firmware problem - but roughly 3 days ago, Google Play started to not let me in thanks to a "connection error". After deleting my account from Google, clearing cache and fixing the "hosts" file. Nothing worked.
Seemingly, A factory reset would be the only solution?
So I backed up all my images, music and contacts to the SD card, unmounted it and factory reset the phone through the recovery method thinking "Finally, it'll all be back to normal" but once again. Google won't allow me to add an account and the software won't update although I have the stock firmware?
Is there any way to actually fix these problems properly?
Galaxy S3 LTE
Stock Android version 4.1.2