Huawei Ascend Mate 7 Quick Start Manual page 6

Getting started
Keep the SIM eject tool away from children and, to
avoid injury or damaging your phone, exercise
caution when using it.
Your phone's built-in battery is not user-removable.
Caution
To replace the battery, contact an authorized
Huawei service center. Do not attempt to remove it
yourself.
Follow the instructions in the following figures to install
your micro-SIM card, microSD card. Before you insert or
remove the micro-SIM card, power off your phone.
1
2
3
2