Is SIM/SD assy well
connected to main board?
Reassemble SIM/SD assy and still SIM
does not work, replace SIM/SD assy
Step 3
Check the SIM Voltage.
(C6 of SIM FPCB) >= 1.8
or 3.0?
Change to the new SIM card.
If it doesn`t still work SIM card after changing
the SIM card, Check the U300 (Crack etc)
Step 4
END
Samsung gaLaxy S4 I9500 Insert Sim Card
Samsung galaxy S4 I9500 insert Sim Card Jumper
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