Samsung galaxy S4 I9500 NFC Signal Not Working Solution Schematic,Circuit,Diagram


Samsung galaxy S4 I9500 NFC Signal Not Working Solution Step by Step

Step 1
NFC is not working

Step 2

Check the Battery
(NFC Antenna is in Battery)

Check the battery
(antenna/contact crack, open, damaged)

Step 3

Check the Voltage on
NFC_EN, NFC_IRQ
goes high

Check the TP839, TP842

Step 4

Check 26.00MHz Clock which
is OSC801 with C868

Check the OSC801(crack, open, etc.)

Step 5

Check the Voltage on
C868(VBAT), C882(1.8V) goes
high

Resolder or Replace U800

Step 6

END



Unofficial Support Site For This Phone By Welcome Zone Haldwani
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