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T-Mobile myTouch 3G

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System and Upgrade

How do I stop applications from running in the background? more
You may browse the Market to find programs that will allow you to see which applications are running and give you the ability to stop them.
How do I restart my phone when a program is not performing properly or the phone is not responding to any key presses? more

Press and hold the END CALL/POWER button for 3 seconds. When the Phone options menu appears, tap Power off. Tap OK when prompted to turn off the phone. Press the END CALL/POWER button again to restart the phone. If the phone is not responding to any key presses remove the battery for 3 seconds and then reinsert the battery and turn on the phone.