I have an iPhone 4 running on iOS 5.1.1 with a preserved baseband of 04.10.01 and a gevey sim. My phone ran out of battery yesterday and then I tried to do the unlock for tmobile but it didnt work. When I turned off the iphone then turned it back on, i waited for the welcome screen then hit cancel. i went into settings>phone>sim applications>english and then hit accept. i then dialed 112 15 seconds later and ended the call within 2 seconds. i turned airplane mode on until it said "no sim card installed" and then i turned it off. the message popped up sim failure and then my connection bars went up to 5 but it did not show the tmobile carrier. about 30 seconds later, it went down the 1 bar and then at the top it says invalid sim. please help me! i tried restoring but that didnt work 