I have had jailbreakme on my iphone 4 since they release it working fine. Recently thou I have noticed and being told that 95% of my incoming calls are going to voice mail. I tried turing voicemail off and now all they get is cannot connect this call. The phone has full service and can make outgoing calls. I have also changed the sim and checked with 02 to make sure there are no problems. Now I have flashed back to 4.01 (no jailbreak ) and everything works fine. Installed loads of apps still works. Ran jailbreakme and within 10 minutes cant ring into my phone. Any ideas as it used to work fine?