The Blackberry Storm 2 is a smaller touchscreen phone with a variety of functions. One common issue is with the bottom buttons not responding like they should. With this phone in particular, it had a shattered screen but even before the crack it was not responding like it should. There are a variety of reason why this could be.
A Droid X repair is very dicy and easy to screw up if you don’t know what you are doing. There is some material online that helps with the overall process of DIY repair but everything false short in some degree. This won’t be the end all guide but this is meant to fill in some gaps so you don’t screw things up rather than fixing it successfully.