iPhone NFC issue resolved after moving to iOS 26.6
I am having problem with Apple Pay/NFC early this year after iOS upgrade to 26.3. Then it stopped working totally after upgrading to iOS 26.4. Did an upgrade to 26.5 and still not working. Tried all the methods and nothing can solve the issue. I have an iPhone 15 pro max and there is an NFC option under setup/general below the Car Play Option. Such an option does not exist on any of other iPhone like 16 pro max at all. I ran the hardware diagnostic. The mobile inspector detected a faulty NFC hardware. Since then all the NFC related function stopped working. At the same time the iPhone response is very slow every time when I touch the screen to wake up the iphone.
Last night I did a painful upgrade to 26.6. I have to connect the iPhone to a computer since the OTA upgrade stopped working since 26.4. After that I found the NFC option turned into green. Then I ran the mobile inspector and it returns the result that everything including the apple pay are working properly. Then I reinstalled the credit card into the wallet which I could not when there was a NFC issue. I also ran the automation under the shortcut for NFC scan, it can properly detect the credit card. I have yet to test the apple pay on the real terminal.
It seems that NFC issue is really a software issue and the iOS 26.6 did resolve it on my iPhone 15 pro max.