Asus ZENFONE T500 Service Manual - Page 30
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ASUS T500
Solution:
1
Re-insert or replace the SIM cards and test again
2
Visually inspect if the SIM card socket has soldering deviation, high floating or is damaged
3
Measure the SIM supply voltage
4
Add soldering or re-solder PMIC
5
Add soldering or re-solder CPU
CPU U501
PMIC
MB Service Manual
SIM socket
SIM socket
30