i just jail broke my iphone 3g for the 2nd time i havent done it since the new big update so i assumed i thought it was about time. anyway after i jail broke it it said " waiting for activation " so i took out the sim because all it was doing was staying on that screen. once i popped out and popped in the sim the " no sim card installed " prompt came up. i look at every thread related to this i tried to resent my network settings and still no luck. and for the record im an at&t user. please any help, i need my phone for work tomorrow.