hey guys, so I just had a question about my iPhone 4.. 2 days ago, my phone decided to go into no service mode... i'm using a gevey ultra sim, and have had absolutely no problems at all, I have even had immaculate signal in underground parking areas. needless to say, i was in shock when it went into no signal. i researched and researched, and i took the sim card in and out of the phone, reset networks, rebooted, restarted, EVERYTHING! and still no signal, just searching.... no signal everytime. i called apple last night, and told me to take it into the store. just wondering if anyone else has had this problem, and took it into apple.. what did they do with your phone? replace or repair?