So i recently jailbroke my iPhone 3g, and everything was going fine. After jailbreaking I switched my service to T-mobile pay as you go and my messaging was working. After I switched to a monthly plan, I realized I was able to send texts, but not able to receive any text messages. Are there any apps in Cydia that are causing this problem? I called T-mobile and had them reconfigure the phone, and according to them everything on their end is working fine. They told me to call apple, but seeing as my phone is 3 years old and jailbroken, calling Apple is pretty much useless. Any tips/ things to try? Thanks!