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The signal might be blocked in the area like elevator or tunnel. IPhone cellular data problems are often caused by weak signals, loose SIM card, or wrong settings on iPhone. Turn off cellular data button and turn it on Why is cellular data not working on iPhone after iOS update? Not able to use cellular data on iPhone is quite disappointing but this guide will tell you why the cellular data issue happens and how to fix cellular data not working after iOS update. After all, it is the aim to let users help find the unknown bugs before it is officially releasing. For example, now iOS 16 supports unlocking an iPhone via Face ID while you wear a mask. But after the update process, it is common to find some issues on iPhone like iOS Bluetooth problems or cellular data not working. Updating the latest iOS system can help you get the latest features.

I have turned on Cellular data iPhone settings but it is not working. I can't use cellular data on my iPhone 12 since I have installed iOS 16. Cellular data not working after iOS 16 update

The Unknown City download the new version for apple