Your smartphone uses a replaceable battery to provide power. It is packed separately from your smartphone and needs to be inserted and charged before you can use the smartphone.
Installing the battery
Insert your fingernail into the cutout between the battery cover and the phone. Unclip the cover and lift off the battery cover.
Place the battery into the battery compartment, lining up the battery connectors with those at the bottom of the compartment.
Align the tabs on the cover into the slots on the phone. Gently press the cover until it snaps in place.
CAUTION: RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN
DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS.
Charging the battery
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.
Removing the battery
Open the battery compartment as shown in Installing the battery. Lift the battery out of the compartment by lifting at the bottom of the battery.
Replace the battery cover as described above.