Hey guys, I've had this problem for about a week now and I've subsequently lurked forums and tried to find solutions, however, there was none. I got my Samsung Galaxy S2 via Three (yes I know) and it was working beautifully for a good two months. All of a sudden, however, my phone simply wouldn't detect my sim card. Whenever I pull down the options menu ( or whatever you call it), it says No Service, and my tab at the top of the screen has a circle with a line crossing through it, meaning I haven't inserted a sim card. I've tried a factory reset, cold battery switch, etc. I've even put my phone in rice in case it may have been water damage. However, all of the above have worked to no avail. I've called Three multiple times, and they say it may be my Sim card, and the fact that it's old (wtf?), even though newer sim cards still don't work on it. Any help would really be appreciated guys, thanks alot.