About Sim Card - Zte MF91 User Manual

2. Select Safely remove the USB disk which is relevant to the device.
3. Remove the device directly.

1.5 About SIM Card

Avoid handling the SIM card unnecessarily. Hold the card by the edges to prevent static damage. Keep
the SIM card away from electrical and magnetic appliances.
If you cannot get service, make sure that：
You are in an area which has network coverage.
•
You are using the correct SIM card.
•
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