How to safely shut down or force shut down Huawei devices

Huawei Honor 3X G750 Huawei Honor 3X G750
Huawei Ascend Y220 Huawei Ascend Y220
Huawei Ascend Y320 Huawei Ascend Y320
Huawei Ascend Mate2 4G Huawei Ascend Mate2 4G
Huawei Ascend P6 S Huawei Ascend P6 S
Huawei MediaPad 7 Youth2 Huawei MediaPad 7 Youth2
Huawei Ascend Y530 Huawei Ascend Y530
Huawei MediaPad X1 Huawei MediaPad X1
Huawei MediaPad M1 Huawei MediaPad M1
Huawei Ascend G6 Huawei Ascend G6
Huawei Ascend G6 4G Huawei Ascend G6 4G
Huawei MediaPad 10 Link+ Huawei MediaPad 10 Link+
Huawei Ascend Y600 Huawei Ascend Y600
Huawei Ascend G730 Huawei Ascend G730
Huawei Ascend P7 mini Huawei Ascend P7 mini
Huawei Ascend P7 Huawei Ascend P7
Huawei Ascend Plus Huawei Ascend Plus
Huawei Ascend Y330 Huawei Ascend Y330
Huawei Ascend G630 Huawei Ascend G630
Huawei Ascend G535 Huawei Ascend G535