Zte Blade C2 Plus Quick Start Manual page 10

Therefore, it is recommended that you keep a microSD card installed and
not remove or replace it randomly.
Charging the Battery
When you first get your new phone you'll need to charge the battery like
this:
1.
Connect the adapter to the charging jack.
2.
Connect the charger to a standard AC power outlet.
3.
Disconnect the charger when the battery is fully charged.
NOTES:
● If excessive discharge of the battery, the charging icon will display
delay.
● If the battery is extremely low, you may be unable to power on the
phone even when it is being charged. In this case, try again after charging
10