What’s happening with iOS 10?
Good news! Apple has addressed an issue with iOS 10 which was causing T-Mobile customers with iPhone SE, iPhone 6 and iPhone 6 Plus to lose connectivity in certain circumstances.
If you had already downloaded iOS 10 before 9/16, go to Settings > General > About to install the fix.
If you have not downloaded iOS 10 yet, feel free to do so when you’re ready!