We've just posted a public beta of SkyDemon 3.5 on our Android page, which includes rainfall imagery. Please give it a try and let us know here how you get on.
http://www.skydemon.aero/start/beta.aspx

No worries, I don't either, I use an external modem... (highly recommended for just these kinds of situations)

Great to be able to check weather, get updates from individuals I'll be meeting up with, or for handling last minute details on the way.

Sure takes a load of stress off being able to communicate and obtain auxiliary info while in flight.