[thacounty]

It is usually hardware related. A guy had some luck in another thread just like this by taking off battery cover, sliding phone open, and pushing the space bar very hard. He said like you thought it might be too hard. Don't break it, that would be counterproductive, and I am not responsible for what you do to your phone, but another guy tried it on his bad kb phone and he had luck with it also. If mine quits again I'm going to try it.

This may be from phone getting hot. Get a new phone or fix yours as stated above, unlock, and get a radio that doesn't run so hot.