Hi, I updated my phone earlier today to jelly bean 4.3. Since then, I have stopped receiving network. The EMEI number doesn't show in the device info either. Tried restarting, taking out the sim card and putting it back in. Nothing works. It says this right after restarting, "currently unable to download, try again later". I bought my phone from Qatar and I am currently using it in UK (t-mobile) if that makes any difference, but it was working perfectly fine before. Anyone got a clue how to fix this? Please HELP! :-[