2.
Press and hold the POWER button, and then tap
Restart
.
HTC Desire 555 not responding?
If HTC Desire 555 does not respond when you touch the screen or press the
buttons, you can still restart it.
Press and hold the POWER and VOLUME DOWN until your phone vibrates,
and then release the buttons.
You may need to press and hold the buttons for 12 to 15 seconds
before the phone vibrates.
Resetting network settings
Reset the network settings when you're having problems connecting HTC Desire 555
to your mobile data or Wi-Fi network and Bluetooth devices.
1.
From the Home screen, tap
Settings
Backup & reset
.
2.
Tap
Network settings reset
.
3.
Tap
Reset settings
.
4.
Tap
Reset settings
.
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Sync, backup, and reset