@omartins:
Agreed, undervolting can be the cause for many problems, especially since every hw is unique in how low (and high) it can go.
But normally, you'll see freezes and restarts with voltages too low, but not radio crashing.
But I had a thought about it, maybe I have no troubles because I use the max-freq feature together with lazy-gov, meaning everything done in standby is done at 1000 mhz. Possible I'm avoiding any problems caused by lowfreq/low voltage this way...?
And coming back to the dead radio issue:
Didn't the galaxy nexus have the same issue after 4.0.4 got released for it, ending in another ota by Google? (Still 4.0.4, but higher build number than we got)