I think some more information would be nice.Is the device supposed to send or receive? Data or simple messaging?What kind of traffic do you expect? Streaming video or a few status messages a day.
It's not supposed to do that. My FP3 got unresponsive after a while as well. The trick was to open it up and gently tighten all screws.
Dairy Queen, word for word.
I'll skip it :)