I've had the same rom (paranoid android 3.99 RC2) running on my phone for 6 months and everything works perfectly until one day as I'm driving home the GPS goes wonky.
I restart my phone and then boom, no cell service on my phone.
I tried to:
wipe cache, dalvik
shutdown and reboot multiple times,
install a fresh copy of the rom,
tried other roms,
made sure i wiped system and storage when flashing new rom,
and tried to insert, reinsert sim card multiple times.
Strangely enough when this problem happens, the home button laso seems to act like its unlocking the device...
What do you guys think?
I'm thinking maybe I got some water on my device and ended up having it seep into the home button and the back of the device.