If
HTC Desire 650 dual sim is running slower than normal, is unresponsive, or has an app that is not performing properly, try rebooting and see if that helps solve the problem.
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If the display is off, press the POWER button to turn it back on.
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Press and hold the POWER button, and then tap
Restart.
Tip: You may need to press and hold the buttons for 12 to 15 seconds before the phone vibrates.