i9505 ONLY RECOGNIZE ORANGE SIM - Galaxy S 4 Q&A, Help & Troubleshooting

Hello,
I am a mobile technician in a shop in Spain. I get many Samsung S4 i9505 to repair because they stop recognizing the SIM card from other companies like Vodafone, DIGI, Movistar, Simio, Amena O2, Hits, Amena, etc except ORANGE. Orange is the only one that is always recognized and able to make calls.
With the SIM card of the companies mentioned above, the device says " NO SIM CARD INSERTED "
What I've done so far is:
Tested with different Stock / Custom ROM ( 4.3 / 4.4.4 / 5.0 / 5.0.1) Including pits / modems
Replaced the SIM card reader (different versions of sim card slot reader REV 1.3 / REV 0.3 / REV 0.6)
Looked with the microscope to check if there is any corrosion around the connectors
I am sure that there must be a chip that has to be replaced or re-flowed..
any help would be very much appreciated as I have over 10 devices with the same problem.
:silly:
UPDATE****
I think typing this post inspired me and found the problem.
The issue is the NFC IC that is causing the issue - had to be re-flowed

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Before Rebel SIM method. I tried unlocking codes without luck. My device was eventually in such state that it was prompting PUK and then PIN code in loop - entering PUK code or unlock code in prompt didn't help. I also tried flash between AT&T <-> Bell firmwares, no luck.
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===========================
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===================================================
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==============================
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