You can activate a new or used iPhone for use with a cellular service provider in a few steps. Here's how to activate any iPhone, or troubleshoot it.

You can manually update the carrier settings on an iPhone through its Settings app to ensure your phone works properly.

But while Japan’s infrastructure is famously efficient, staying digitally connected as a foreign traveler can still be a ...

No one likes dropping offline, especially if you need to stay in contact. Get expert tips for boosting your cellphone signal on iPhone or Android.

Instead, you need to open and register Signal on the new phone and select an iOS transfer. Then you use a QR code to connect ...

Learn how to activate eSIM on your iPhone with this easy guide. Discover compatibility, setup methods, and tips for seamless activation.

If you're not rushing to update your iPhone to iOS 26 anytime soon, these are important iOS 18 settings you can change now. Jeff Carlson writes about mobile technology for CNET. He is also the author ...