ZTE MF920U Guide De Démarrage Rapide page 61

Installing Your Device
1. Open the micro-SIM card slot cover.
NOTE:
Do not remove the cover rudely, because it is connected with the
device.
2. Install a micro-SIM card to the micro-SIM card slot.
WARNING!
Your device does not support SIM cards, nano-SIM cards or any
other non-standard micro-SIM cards. To avoid damage to the
device, do not use those cards or any card holders.
3. Close the micro-SIM card slot cover.
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