Getting to Safe Mode
Getting into safe mode in your BlackBerry is quite easy and should only take a few minutes to complete.
The first thing you need to do is remove your battery. You may be able to do a soft reset by using you keyboard keys of ALT, the right SHIFT key, and the DEL buttons. If you have removed the battery, replace it.
Next, power up your phone (if you've removed your battery). You'll need to wait for the red light on your phone to go off as the phone starts, then press and hold the escape button on the key pad. Hold this until the phone starts to power up and go to the operating system. You don't need to continue to hold the button during the start up process, but it's a good idea to count to a slow 10 before releasing the button.
Now, instead of your normal screen, you'll see the safe mode screen, which will then ask if you want to continue using safe mode, if you just want to reset the start up process, and if you need any help. Press OK to go into safe mode. When you've entered safe mode, you'll discover that you're taken to your home screen, however, you'll note that the words SAFE MODE will be at the top of the screen.
Again, just like a computer's safe mode, only the basics of the BlackBerry will be running, such as messages, the phone, and browser. This allows you to go through those third party apps that might be causing issues.