iPhone 12 losing service

Apple support ran diagnostics remotely on my device today and found no problem. Directed me to my carrier which sounds like a waste of my time given this is affecting many carriers.

i saw new iOS update coming out but no mention of this in the release notes unfortunately

I just got off the phone with the local Verizon store again. They continue to say it’s a software issue the the iPhone 12 can’t switch between LTE, 4g, 3g and so on. The Samsung phones that use 5g are working fine.

I was going to go back to an iPhone 11 Pro Max but they aren’t selling them anymore!!! So frustrated!

I have done many things to try to fix this issue. I talked to both Verizon and Apple (3 times). I have twice reset carrier settings. (Go to Settings, General, then Reset, then Reset Carrier Settings. I also switched from 5G auto to LTE. In between I had also removed and re-put in the same SIM card. After the last reset carrier settings it seems to be doing a little better but I’ll have to see if this lasts because it was dropping nearly every call or having it where I could hear the person I was talking to but they could not hear me. This was happening at my house.

I spoke to an Apple tech support person who was extremely articulate in protecting Apple and pointing the problem back to the carrier (VZW).

It was recommended that I tell the carrier to change my plan to 4g or 3g and all would be well.

I bought a new phone, transferred my data and expected the phone to work as my previous 4 iPhones have worked.

Now I am caught between the carrier and the manufacturer with an unreliable phone.

Some of you are in far more critical need of your phone than I, such as health care and first responders.

I hope this situation doesn’t keep essential folks from life saving situations.

Why is this not being fixed?? Have you seen the number of comments? HELP!

I seriously doubt this has anything to do with the carrier, any carrier. I have changed 5 (!), yes five, different carriers in 3 different countries and the problems were the same, regardless of who was providing the service or whether it was a virtual or physical sim.

CATManRetired wrote:

I spoke to an Apple tech support person who was extremely articulate in protecting Apple and pointing the problem back to the carrier (VZW).

It was recommended that I tell the carrier to change my plan to 4g or 3g and all would be well.

I bought a new phone, transferred my data and expected the phone to work as my previous 4 iPhones have worked.

Now I am caught between the carrier and the manufacturer with an unreliable phone.

Some of you are in far more critical need of your phone than I, such as health care and first responders.

I hope this situation doesn’t keep essential folks from life saving situations.

Why is this not being fixed?? Have you seen the number of comments? HELP!

Once again, no one from Apple is officially reading this forum, so you are only talking to other users here.

As I have stated, I and many, many others on AT&T without 5G on our plans are seeing no issues whatsoever, and I suspect the same is true for Verizon customers.

I have the issue too with ATT and 12 pro max. I do not lose bar strength (doesn’t say zero bars for connection) and I don’t get no sim error. I just can’t browse or use apps that require data or net. Airplane mode on then off has worked as far as I can tell. I know this differs from others here but loss of service is loss of service. I’m not planning on returning the phone as I assume at some point it will resolve. If it’s not fixed within the one year warranty then maybe I have replace regardless but I can’t see it come to that or be unresolved for that long. Those that need to have their phone work 24x7, I feel for you.

Apple is not officially on these forums, so is there somewhere they have officially acknowledged the issue?

Next time you loose service look to see if your ICCID is there under Settings>General>About — Scroll down to Primary and you will see network, carrier, IMEI, ICCID

when your phone is working the ICCID should be there and display the number that is printed on your SIM card itself. This is the ID of your SIM card. When you loose service you will notice your ICCID may be missing or display NO SIM.

This indicates that there may be a hardware issue with the phone.

Loosing service because of bad coverage or problems switching bands like everyone is saying would never cause your phone to not physically see your SIM card. You would just loose service......

Goodluck! And let us know if this is your case.

So hopefully everyone takes a look in this forum and Apple as well and puts the correlation together between the SIM ID and loosing all cellular service and figures it out.

for the time being I’m using my iPhone XS Max with the SIM card from my 12 and it has been flawless.

I may return my 12 until this is fixed as Apple has yet to acknowledge the issue publicly at this time.

please everyone check to see that this is happening on your phone with the SIM ID disappearing and post here so we can all see the correlation.

thanks and good luck

Same here. I had an iPhone X that worked perfectly fine in my home (with Verizon). I received my iPhone 12 Pro last week and suddenly every single call gets dropped and most of my texts to non-iPhone users won't go through. I NEVER had issues like this before on my iPhone X. This really needs to get resolved! Would this be something Verizon needs to fix or Apple?

It’s ridiculous- I have had this phone 1 week and consistent with almost every call, I hear “are you there, I can’t hear you?” Or the phone simply drops!! As much as we pay for these phones, it’s not acceptable! My whole business is on my phone and this poses a major issue!! I don’t know if it’s Verizon or Apple, but they need to get this figured out ASAP!!!

I received my new iPhone 12 last Monday and I activated it last Tuesday. Since then, everyday at least once, it will lose all signal bars and 5G or phone line connection. Once I realize this has happened I have to restart my phone or remove and replace their SIM card to get their handset to sync with my carrier's network. This is such a frustrating customer experience

My strong advice is to return the phone before you can’t. You can always buy it again, when and if this is fixed, and probably at a better price. If you don’t return it now, you could end up with a $1000 paperweight.

heliofrombrooklyn wrote:

I work in the wireless Industry and this seems to be an ongoing issue across all the iPhone 12s in general.

It is not.

Though there are those with issues, literally millions are using theirs with no issues whatsoever.

I have a 12 Pro Max with AT&T and have never had any cell reception issues whatsoever.

Furthermore, I have several friends who also have a 12 Pro Max and have zero issues.

I suspect it is a carrier issue, but whatever the problem is, it's not universal to all iPhone 12 models.

What you describe sounds a lot like an issue with the way your local cell towers are configured as picking up service is instantaneous for me, no different than any other recent iPhone has been.