Alcatel onetouch Pixi 3 Quick Start Manual page 4

Inserting the micro SIM card & the microSD card
To avoid damage, insert your SIM and microSD card in the correct
direction. Refer to the instructions given below.
Note
Charge the device before using it for the first time. Press and hold
the Power key to turn on the device. After starting up, the Home
screen appears. When the device is low on power, a battery icon will
appear on the screen, indicating that you should charge the device.
Only use the charger recommended by TCL Communication Ltd.
and its affiliates.
This device can't be charged through a USB computer connection.