How to reset (reboot) blackberry?

image by berryreporter.com

There are many ways to reset the blackberry. Here are some way:

1. pull out battery

• turn off you blackberry
• take off back cover pull out battery from device
• at least 20 seconds you can put battery back

2. Key Combination
Press Alt-RightShif-Delete keys together

3. Via 3rd-Party applications
you can find it on appworld, and some of applications free of charge

FYI, Press and hold the power button, doesn't reset the phone. Its just turns the phone into sleeping mode.