Huawei O2 4G Pocket Hotspot Plus Mobile WiFi Pro Quick Start Manual page 16

Charging Other Devices Using the Charging Sling
You can also charge other devices by simply connecting them to the Mobile WiFi using the
charging sling. The devices can be charged only when the Mobile WiFi is on.
Note:
The charging sling is intended as a carrying device only. Do not be tempted to swing the
device around using it.
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