Originally Posted by Pallav Sheth
Try to check your APN settings. It worked for me.
The APN actually was cleared but that wasn't the problem as I was trying to connect with wifi, however the problem was fix on the nightly right after that n.n been working great with ART
the only problem I seem to be having now is the occasional deep sleep which the phone wont wake up from without a reboot. Not really sure what's causing it.