Huawei O2 4G Pocket Hotspot Plus Mobile WiFi Pro Quick Start Manual page 12

Getting Started
Installing
Install the SIM card and microSD card according to the illustration.
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Note:
Do not remove the SIM/microSD card when it is in use. Doing so will affect the

performance of your Mobile WiFi and data stored on the SIM/microSD card may be
lost.
The microSD card is an optional accessory. If no microSD card is included in the

package, please purchase one separately.
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