I have a 2G Iphone which has been jailbroken, unlocked and is running on version 3.0.0 software. I am using the phone on Virgin who provides a facility to view recent calls. From this I have discovered that the phone is somehow connecting to the internet via Virgin - even though wifi is available - and will try to connect every 15 minutes or so until I switch the phone off and restart it again. At first I thought it may be an app but all have been removed now and I am operating with the facilities provided with the basic phone. Can anybody help as this is costing me a fortune?