My phone been running slow lately so I decided to do a factory reset. I backed up using ClockworkMod and then did factory reset. When the phone finished factory reset, everything seem to be working fine except that it is not connected to Sprint data network at all. The box for mobile network is check but it is not connected. I then restore back to what I had before but network is not working there either now. I tried turning on and off airplane mode and Mobile network but that didn't help. Lastly, I boot into ClockworkMod again, but this time I wipe cache partition, as well as Wipe Dalvik Cache, and then did the factory reset. But that still didn't solve the problem. Any ideas on how to fix this issue? Thanks. Currently running CyanogenMod 220.127.116.11-aospCMod BTW, should I upgrade to the CM7?