UTOK 500Q HD User Manual page 23

2.2. Open the battery door
Push the battery cover upwards.
2.3. Install SIM Cards
This phone supports dual SIM/USIM cards standby, before
you power on the phone, make sure there is at least one
SIM/USIM is inserted in either USIM/SIM slot.
Note:
∙ Dual SIM/USIM in standby will shorten the standby time
compared to single SIM.
· If you want to insert or remove the SIM/USIM card, please
make sure the phone is power off.
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