I am developing an application and during my testing on a real device I have found that it will crash and cause the phone to reboot (worrying I know...)
Use http://code.google.com/p/acra/, which is a great lib to send crash reports to a google form incl. stack trace. I use it in my app and works nicely. Let me know if you have any difficulties implementing it.
Read the http://code.google.com/p/acra/wiki/ACRAHowTo, it's easy to setup.