Charging Your Phone; Resetting And Restarting The Phone - Acer DMZ220 Manual

Charging your phone

For initial use, you need to charge your smartphone for
eight hours. After that you can recharge the battery as
needed.
Connect the AC adapter cord to the micro USB
connector on your smartphone. Plug the AC adapter
into any AC outlet and charge the device.
It is normal for the phone to heat up when charging or
during long periods of use.
All phones are factory tested before release.

Resetting and restarting the phone

Open Settings from the Applications menu, then tap
Backup & reset. Tap Factory data reset and then tap
Reset phone. Tap Erase everything to format your
phone.
If your phone is no longer responding, press and hold
the power button and volume up button simultaneously
for 8 to 10 seconds to reset the phone.