Huawei G535-L11 - How Do I Enable Power Saving Mode of Key Backlight; How Do I Turn on or off Airplane Mode

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2.19 How do I enable power saving mode of key
backlight?
Go to Settings. Under DEVICE, touch Display. On the displayed screen, touch Touch key
light. Then, select Smart on/off or Always off.
2.20 How do I turn on or off airplane mode?
Note:
When airplane mode is on, your wireless connections will be unavailable.

Method 1:
Go to Settings. Under WIRELESS & NETWORKS, select Airplane mode to turn it
on, or deselect Airplane mode to turn it off.