Krüger & Matz DRIVE 4 Manual De Instrucciones página 65

Owner's manual
2.2 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.
① micro SIM
② nano SIM
Note: Dual SIM/USIM in standby will shorten the
standby time compared to single SIM.
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