From Repair Mobile
[edit]
RESET AND CLEAR CODES FOR BLACKBERRY
Master Reset - If Blackberry unit locks up try a master Reset. Take the back door off and push a paper clip in the small hole on the bottom that says
RESET. The unit will power off then back on. (No information will be erased).
-Master Radio Reset - If Blackberry wireless service does not work after turning wireless on try a Master Radio Reset. Select the Options icon,More details [1] - thanks to mobile-files.com
