Samsung gt s7562 Samsung Galaxy S Duos S7562 Sim Card not Working solution

Samsung gt s7562 Samsung Galaxy S Duos S7562 Sim Card not Working solution Schematic, Diagram,Circuit

Samsung gt s7562 Samsung Galaxy S Duos S7562 Sim Card not Working solution Step By Step

Step 1

Insert & Operate
SIM card

Step 2

SIM Connector
Break down?

Change SIM700

Step 3

R719,R720
= 3.0V

Check PM400(PMIC)

Resolder SIM700

Step 4

Check data,clk,reset line

Resolder or Replace
PM400

Change PBA

JUMPER

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