...still play music and play apps? I don't know what happened, but all of sudden my jailbroken iphone wont recognize my sim card anymore. I didnt upgrade anything and I can still use my iphone for playing apps and music, but I just can't use it to call or text. It looks like the phone knows there's a sim card in it, because it's showing the bars symbol in the corner, but there's no bars. It usually has "T-mobile" near the bars but now it doesn't. Now, it usually stays at zero bars then says no service. So I tried going to settings and select a carrier, except the "Carriers" button is gone, so i can't select T-Mobile anymore. I really really really need my phone to work again, so any answers are appreciated! Thanks!