Because I just have some iPhones around with OS version 18.5 and test them with Xcode newly compiled app and just happed to see these test results. And I ran some additional tests on iOS 18.6 and results are as follows. Xcode compiled or uploaded app has been tested on iOS 18.6.2 and it's ok. But I did not test on older iOS versions or install on older version then upgrade iOS version and test if it would function well.

Because I just have some iPhones around with OS version 18.5 and test them with Xcode newly compiled app and just happed to see these test results. And I ran some additional tests on iOS 18.6 and results are as follows. Xcode compiled or uploaded app has been tested on iOS 18.6.2 and it's ok. But I did not test on older iOS versions or install on older version then upgrade iOS version and test if it would function well.

Xcode compiled or uploaded app has been tested on iOS 18.6.2 and it's ok. But I did not test on older iOS versions or install on older version then upgrade iOS version and test if it would function well.

Xcode compiled or uploaded app has been tested on iOS 18.6.2 and it's ok. But I did not test on older iOS versions or install on older version then upgrade iOS version and test if it would function well.