How To: Access the field test mode on the iPhone

Access the field test mode on the iPhone

Watch this electronics tutorial video to learn how to enter a secret code and see a lot of interesting info on how your iPhone connects to the network. Field testing your iPhone is easy with the tips in this how-to video.

Just updated your iPhone? You'll find new features for Podcasts, News, Books, and TV, as well as important security improvements and fresh wallpapers. Find out what's new and changed on your iPhone with the iOS 17.5 update.

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