If the reset doesn't work then the phone is usually exchanged at the counter or they try flashing it to the latest version. This area can upset those used to working on PCs.
Since lately I have been having problems with my galaxy S3. It hangs up and gets stuck randomly while I use it. Once it hangs i have got to wait 15 to 20 mins or remove and reinsert the battery for it to unfreeze. i have noticed this very often and especially while I am connected to the internet via WiFi or cellular connectivity. I have also tried formatting and restoring to factory settings but with no use at all. Mine is the I9300 running on the 4.1.2 and its not rooted. Can anybody help me out with this issue?
Thanks a lot!