Daughain/monkeypaw,
Thanks very much for the replies.

Regarding the power lines/transmitters... possibly. He has attempted multiple routes home, and it's occurred regardless of the path he takes. Being in the Bay Area, I'd imagine that there's plenty of lines & transmitters available that could cause this if the device is susceptible.

For the OS/Battery - the device is on 4.5.0.81, but the battery strength is a good call.

I need to follow up w/ him so I'll posit both of your suggestions/info and we'll see what happens.

Thanks again!

- Jim