S4 Galaxy SGH-I337 with Android 4.4.4 getting the "no SIM detected message"
My wife has her SGH-I337 with Android 4.4.4 on AT&T getting the "no SIM detected message" with a known new working SIM and a newly replaced SIM + microSD card reader installed.
I used the SIM from her S4 in my S4 and it's working, verified.
She took it to the local AT&T Store and a new SIM was installed, it worked for about 2 days then back to the same problem
Did the hard reset procedure, and also booted this S4 into safe mode, and still the "no SIM is detected" message is appearing.
This S4 can read microSD well. Display is working well, WiFi is good, GPS, Blutooth, all buttons, contacts look good inside, just reading SIM is the problem.
Please let me know if you have any ideas or suggestions to get this SGH-I337 back on the AT&T network. Reading this is a common problem on the Galaxy S4 phones. This phone is 1.5 years old and in great shape otherwise. Any thoughts will Samsung issue a recall on these phones if enough customers complain about this issue?