I Just Updated to 4.4 KitKat via Odin and I don't have any data. I went to check the apn settings and it says "insert sim card" but my sim card is already in the phone. Not sure what to do at this point, I've tried reflashing with Odin, even re-installed the stock 4.4 .tar file multiple times but I get the same result. If anyone could help me out it'd be much appreciated