iPhone 16 Pro Max iOS 18.4 dropping calls and not allowing retry connections

I guess the best way to describe what’s going on is today I was having a phone conversation that was very staticy and when the call was dropped, the retry Insta failed. I found that when I have this problem the only way to fix it is to restart the phone. When I restart, it allows me to make calls with clear connections and no static.

iPhone 16 Pro Max

Posted on Apr 14, 2025 2:34 AM

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6 replies

May 1, 2025 2:58 PM in response to chumsize

It could be a cellular issue and until cellular provider is ruled out there’s no point in troubleshooting the minimal Apple software involved. The software running on the modem is supplied by the carrier.


Apple writes the firmware for the modems and if it was a firmware issue, virtually every iPhone would be affected. That’s simply not the case.

May 1, 2025 3:19 PM in response to Jeff Donald

Timing and provider differences prove you wrong. Please don’t reply to messages like this unless you have something to actually add. It’s probably a collision of a security fix or fixes. It’s a bug no big deal. They happen. And to add - this is happening in the southeast as well. I’m in California.


workaround: turn on and off airplane mode

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iPhone 16 Pro Max iOS 18.4 dropping calls and not allowing retry connections

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