Please help. The missus wanted me to update her s3 to 4.4 KitKat, so went about flashing a custom ROM. I used team win recovery and used official 4.4.2 AOKP ROM (from here http://www.ibtimes.co.uk/galaxy-s3-i9300-gets-new-android-4-4-2-kitkat-update-official-aokp-rom-1431617) The ROM installed OK and I flashed Google apps. It started up nice and quick, setting up the phone, gmail account, etc. But after about 5 mins the phone freezes up and I have to reboot it, only for the same to happen again. What woiulkd be the cause of this? Should I try another ROM?