Cellular service disabled after iOS 15.3.1 update

It’s still an ongoing issue I’m afraid, add no amount of troubleshooting will fix it. It’s a software bug, and it’s still present on the 15.4 unfortunately.

15.3.1 issues

1.) My voicemail is broken. Tells me to set my voicemail back up and then says that it cannot be done

2.) Cellular service will randomly just break for no reason… Like it would randomly just turn off and you have to manually turn it back on.

3.) Twitter Spaces audio stops playing if u leave the app or the phone goes into lock screen. that use to not be the case.

After doing update 15.3.1 I am unable to receive or make calls. I have checked with my cellular carrier and there are no know network issues. I have also received a new SIM card and factory reset my phone with no resolution. I wish I would have never done this update.

I have done all of the following and still not able to make and receive calls successfully. I have talked with my cellular provider three times and visited the store once and they checked my network settings, checked my iPhone settings, changed my SIM card and factory reset my phone. It is no coincidence that this problem started since doing the 15.3.1 update. We need a resolution to be able to restore faith in our Apple product as my next phone will not be an iPhone.

Cellular No Service but the carrier status shows the carrier name and all baseband details I can’t make or receive a call with iOS 15.3.1 update. Even after resetting all settings still didn’t work with my iPhone 8 Plus. It’s either apple fixes it’s mess or we can put a stand against this faulty buggy updates. Start providing downgrade to iOS 14 !!!.

My phone did the exact same thing after the iOS 15.3.1 update. Keeps telling me an update is required to use cellular data on this phone. Apple needs to fix this issue. I am using an iPhone 8 Plus and I need it for work and travel. Can only use WiFi if around a WiFi connection.

Still happening after 15.4 update. Note that this is not a problem of the cellular provider – even if I remove the SIM and start the phone, it shows that mobile data / cellular is not available on this device until it is updated. The device is practically unusable now.

Same thing here. Update didn't work (couldn't be validated because no internet connection, although I did have WiFi alright), so I updated via iTunes on Win64. My iPhone still tells me that I need to update to use cellular service, but of course no update is available. Battery drains fast, I guess because it keeps searching cellular signal.

Let us know how it goes today.. I left my cellular provider thinking it was cured but it continues to do the same thing. It is not consistent and it will work and then it will not. My cellular provider suggested I turn my phone in on a insurance claim.

It sounds like nonsense but that is exactly what I did and then my phone started working. My phone wasn’t working for about week and I literally tried everything, those were the steps that I took. I can’t help that Apple made me go through such nonsense with no help from them.

I’m also having intermittent drops to my cellular connection and also unable to make wifi calls when that happens, even though my phone is connected to wifi and I can send/receive emails or use internet. I have spent a lot of time with my carrier and gone through all troubleshooting steps and concluding this is a major issue with IOS 15.3.1 as the wifi calling also gets disabled.

Why is Apple not addressing this major issue where users are unable to make a phone call with their phone? (Isn’t that functionality #1 of an iphone?)

When I tell you this is word for word the EXACT same thing that happened to me! And Apple tried to sell me a lie like my phone just happened to break and that it’s out of warranty. I had no choice but to upgrade and when I sent my phone in for trade in they rejected it because it wasn’t apple to be activated because of the activation error I got after Apple suggested to restore from factory setting. This just isn’t right for Apple to take advantage of their customers like this.

[Edited by Moderator]

This is also happening to me after updating to 15.3.1. So frustrating!

I hace exactly the same problem. I can not make calls and incoming callers get the message that forwarding is on……have I been hacked or is this a 15.3.1 problem?

Yes-exact same thing happened today. Still can‘t make calls. I was stuck at a hospital after medical procedure, unable to let my husband know to come get me. Nightmare. Still trying to fix it.