Acer Liquid Z6 - Manual (Page 7)

Setting up - 7
Charging the battery
For initial use, you need to charge your phone for eight hours. After
that you can recharge the battery as needed.
Connect the AC adapter cord to the USB connector on your phone.
Setting up for the first time
Inserting the SIM cards and microSD card
1. Turn off the phone by pressing and holding the power button.
2. Insert your fingernail into the notch located at the bottom of the
phone and remove the cover.