iOS 15.4 dropping calls

Does this happen in all locations, or just one? The carrier can check for tower problems in that area. Are you seeing a strong signal when this problem occurs. If you wish to troubleshoot the phone more, you can create a backup of the phone, How to back up your iPhone, iPad, and iPod touch - Apple Support and then restore to that backup Restore your iPhone, iPad, or iPod touch from a backup - Apple Support and test.

I would contact your carrier then, since it seems this call fail has been happening for a while. They may want to replace your SIM.

Something similar is happening to me since I updated to iOS 15.4. Calls fail to go through and I only get “missed calls” messages. It doesn’t ring at all.

Something is wrong with iOS 15.4 phone calls are dropping 😡

Same thing happening to me. My network provider says it’s nothing on their side

Are you still getting this problem as I am also getting the same on my 13 pro max

Looks like everything is working good 😎

How did you resolve the problem please

I reset the phone also remove some app