How do I fix cellular connectivity issues on iPhone 17 Pro Max?

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If your iPhone 17 Pro Max keeps dropping signal, you're not alone. Apple's N1 wireless chip has caused issues for some users. Here's how to fix it.

First: Update your software

Settings > General > Software Update. iOS 26.1 specifically fixes N1 chip connectivity problems. Many users saw issues disappear after updating.

Reset network settings

Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings.

Erases WiFi passwords and cellular settings. Forces everything fresh. Often fixes stubborn problems.

Check carrier updates

Settings > General > About. If a carrier update is available, you'll see a prompt. Install it.

The eSIM refresh

Settings > Cellular > tap your line > Remove eSIM. Then add it back using your carrier's method. Creates fresh connection.

The simple stuff

Turn on Airplane Mode. Wait 30 seconds. Turn off. Forces reconnection.

If nothing works:

Force LTE only: Settings > Cellular > Cellular Data Options > Voice & Data > LTE. A workaround, not a fix.

Document your problems and contact Apple Support. Some users have gotten replacements.

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