Zte MF605 User Manual page 12

ii) Push the (U)SIM card holder towards the right (as shown) to unlock,
and then lift the (U)SIM card holder upwards.
Open the Holder
iii) Slide the (U)SIM card into the (U)SIM card slot. Make sure that the
gold contacts of the card are facing downwards and that the beveled
corner matches with the (U)SIM card slot.
Slide the (U)SIM Card in
iv) Close the (U)SIM card holder and lock into place
Close the Holder
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