Menu Clock is a simple FREE utility that will put a clock in all of your menus, no matter what application you are in. Need to know the time, don’t want to leave the application you are in? Just click your BlackBerry® Menu key, and at the top is JaredCo’s FREE Menu Clock.
Click on the clock in the Menu to change from AM/PM style to 24h style.
After Installing Menu Clock, please reboot your phone by taking the battery out and putting it back in.