Krüger & Matz KM0408 Manuel De L'utilisateur page 68

Owner's manual
2.3 Install SIM cards
This phone supports dual SIM/USIM cards stand-
by, 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.
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