Intermittent cellular data connection on iPhone 15 Pro

Sounds like you have some type of significant interference between you and the nearest tower. Getting a solid 5G connection is a rarity for most people (despite the lies that carriers advertise). The towers for 5G need to be very close together and therefore unless you are in a stadium or city with modern infrastructure, it's hard to find and keep a solid 5G connection. If you are also dropping to no connection at all, then make sure that you test the situation in an area that you know for sure has a direct view of a cell tower for your carrier. It's possible that at your home, there is a water tower, the construction of your building, or some other large object between you and the cell tower that is causing the issue.

The last thing to check is that your iPhone case is not the issue. It's easy enough to test by taking the phone out of the case and testing for a consistent connection.

IvayloPetrov Said:

"Intermittent cellular data connection on iPhone 15 Pro: Hi there. Does anyone have the problem with the cellular data connection with iPhone 15 pro? Time to times it just stops, it shows full range 5G but nothing. Sometimes even falling to E connection but again nothing. With the wi fi no problem."

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Troubleshooting Cellular Errors:

A. Contact your Carrier:

Being your Cellular services are not working, you need to contact your Carrier.

B. Install a Cellular Update:

It might be a reason you for a cellular update to install. So, go here for that. Update your Carrier Settings Manually on your iPhone or iPad - Apple Support

C. Update the iOS:

• Back Up First: IMPORTANT: If you have an option to update, however, then be certain you backup your iPhone first. That way, you will have something to restore your iPhone from should anything go wrong with the update
• iPhone: Update your iPhone, iPad, or iPod touch - Apple Support
• Use a Computer and Ethernet: Start with attempting an update through use of a computer. If you cannot use Wi-Fi, then use Ethernet.  See my User Tip: Update your iPhone Using a Computer - User Tip. On the computer, you would connect it through Ethernet, going directly into your router. For a Mac (or PC) that does not have Ethernet, this would be the adapter to use: Belkin USB-C to Gigabit Ethernet Adapter - Apple. If you get the same error, the model is likely just not compatible.