iPhone 12 losing service

Verizon Carrier update to 45.5.7 no issues since. Went to several of the locations with issues today and kept service the entire time.

Same problem. New iPhone 12 Pro. 5G works then drops out after a minute or two. Location: Brisbane, Australia in the city. Rebooting restores it, but only for a minute or two. I eventually disabled 5G in Settings and it works well on 4G only. It is not a SIM card issue - I am using the built in eSIM and do not have a physical SIM card.

I have been having same problem phone dropping service where it should be strongest. I would have to toggle between air mode or reboot phone. Tried trouble shooting using with Verizon they tried to find problem and were more than willing to assist in anyway possible. I can’t say Apple was the same. I just went and had a new SIM card installed at local Verizon store and it’s not as bad and if drops will pick back up in a few seconds not perfect but better hope it does not get worse again fingers crossed

Multiple carriers are making the same bad assumptions, and/or it may be limited to one vendor of cellular base station controller.

Carrier updates and/or new SIMs have resolved this issue for many.

Were it the phone itself, everyone would have this issue and only a small percentage of users do.

I agree that these issues are related to how the carrier assigns a band to each device, not a hardware problem. This isn't to say that some folks don't also have hardware issues. In my case after experiencing signal loss I had Apple replace my two iPhone 12 phones twice. So a total of six iPhone 12 phones with the same issue strongly indicates that it wasn't the phones. Sorry for all the folks who are waiting on replacement phones hoping that this will solve their problems. After Apple engineers worked with Verizon to modify their configuration, I'm now getting a strong signal on both iPhones in my house, in the same location where a week ago I had a weak signal or in come cases, no signal. This strongly suggests, at least to me, that Apple was correct in telling me that the carrier(s) had to change their band assignment configuration.

I returned my 12 and replaced it with an 11. Purchased 11/20. At that time Verizon had a 30 day return policy. Still do. Returned it 12/10. By day 1 with the 12 I already had dropped calls, no cell and no messages. Tech savvy son looked at it. Tech savvy daughter worked with apple support and did everything they said. Still a sketchy phone. Worked well as a computer, just not a phone. So far no issues with the 11 like I had with my 12. I am not a tech person, but that kind of says to me it is not Verizon, but an Apple issue.

It’s interesting that you think all hardware issues are universal. They’re usually not, of course.

Since my replacement 12 Pro continued to exhibit the same “no SIM” issue, on both physical SIM cards and eSIMs, my husband and I decided to try running 2 iPhone 12 Pro devices in tandem since he had wanted to upgrade his 11 Pro to a 12 Pro.

He bought the 12 Pro unlocked from Apple, just like I did. Did a device-to-device transfer just like I did. Got a new physical SIM card from T-Mobile as I did. We are both on the same T-Mobile shared “55+” plan (hes 55+, I’m not yet! But we both get to share the plan... LOL). And for the last 2 weeks we’ve both been using our respective phones in most of the same places at the same times (including home obviously). My phone continues to go cellularly dead with “no SIM” and no service, at least a dozen times a day. As long as I’m on WiFi when it happens I ignore it since I know eventually it will revive itself or I’ll reboot the phone later when it matters.

My husband’s phone hasn’t experienced this a single time on his 12 Pro, in any location, with any SIM.

We’re both home all this week and next so on Monday we literally traded Phones. All this swapping and resetting and replacing is a royal pain for me because it means repairing a variety of things, including my Apple Watch, but I’ve got the time for

now, so I’m doing it anyway.

Since Monday (it’s now Thursday), my husband’s phone (which was mine last

week) drops to no SIM and no service many times a day while we’re both at home on the same couch and mine (which was his last week) has functioned perfectly.

As a reminder, Apple had already replaced mine once and the issue persisted.

** I’m left to believe that it is absolutely not strictly a tower issue since 2 identical iPhone 12 Pros on the same carrier, in the same house (and same locations when outside of the house) behave differently - one has the problem while the other doesn’t. **

The good news for me is that my husband

is retired and is far less dependent on his iPhone when he’s out and about and not on WiFi so we’re going to keep our swapped phones so that I can now have one that doesn’t leave me with no form of communication when I leave the apartment 😁

Both our phones are fully up to date and show PRL 1 and Carrier 45.0, by the way.

The bad news is that whether it’s a software issue, hardware issue, firmware issue, 5G issue or carrier issue - it’s affecting many people in many countries on many carriers and still hasn’t been fixed. It’s not my job to keep troubleshooting the issue for them. Apple and the iPhone 12 devices themselves are literally the only constants in this thread. Many carriers, many towers, many bands, many locations, many people, but only one type of phone made by one company. I’m counting on the company representing the one common element to provide the fix, regardless of whose fault it is.

justlaur wrote:

if you’ve been following along, you’ll see that I’ve had multiple physical SIM cards replaced as well as eSIM added (with and without the physical SIM card installed) and “no SIM” persists on both physical and eSIM.

Yes, which is why I said your fault appears to be a hardware defect in the iPhone. Get the offending device replaced under warranty.

That is true , I had the 11 pro before this and not 1 bit of trouble with it until I got the 12 pro , then I had all kinds of problems including loosing the internet and phone signals , so they gave me a new phone and haven’t had any more problems.

Hi same situation here in France.

among the 4 main carriers people who gets the signal issues seem to be with only one of them. (It’s quite marginal with the others).

It started to happen when the 5G was activated (like 3 weeks ago) in France. Before that nobody reported any issues.

This carrier seems to use the DSS technology. : mostly using the 700Mhz band who were formerly implemented for 4G.

Is this a common point with Verizon in the US ?

Having the same issue in Canada on Rogers. Rogers wouldn’t keep signal on 5G auto, on or LTE. It’s doing the same with my bell sim for work but it’s significantly more infrequent. When I spoke to apple they told me I have to do the hard reset with a Mac. Not sure I’ll bother after everything I’ve read here as it doesn’t appear it’ll fix the issue. Still experiencing this on iOS 14.3. Also tried the same sims in my work phone which is an android. Zero issue with the sims. So it’s obviously the device.

I know there are some AT&T users having issues, but my comments are based on the fact that I am personally aware of thousands of users on AT&T with iPhone 12s of various flavors and zero of them have complained of this issue.

That doesn’t mean one won’t tomorrow, it’s just where the evidence is pointing at the moment.

Meanwhile the vast majority of people complaining of this issue here seem to be Verizon customers.

Note also that a significant number of Apple employees use iPhone 12s, and most of them are on AT&T because historically they were the first carrier to embrace the iPhone; long time iPhone users will remember that with the original iPhone you had to use AT&T.

If the 12 was as bad as some people here insist it is, it never would have been released for just that reason.

That’s why I am not being at all snarky when I wonder what a user would see if they tried an AT&T SIM in one of the phones that can’t sustain a Verizon call; I’m really curious if it would fail in the same way or if it would just start working.

Really, I still think it is an issue of a particular brand of MSC equipment at MTSOs as carriers tend to standardize on particular ones and usually not the same gear as their competitors, but that would also fit the symptoms that the issue affects a variety of carriers in different ways.

Hopefully it gets sorted soon, and if you purchase one and run into these issues and don’t want to hassle with it of course it makes sense to take advantage of Apple’s return policy and get something else.

I swapped to AT&T and so far so good I even have 5G in some areas so I’m going to go out on a limb here and say that it’s worse with Verizon not saying it’s all Verizon but I’ll say that 5G has everything to do with all of it I actually spoke with a tower builder that confirmed that Verizon and apple was having issues with the 5G networks but since my swap with the carrier if I do loose service it comes right back like it should and overall the service is way better than Verizon I really hope they get it all fixed and soon because my bill is higher now

No matter what Verizon says, it's their issue and comes because the tower is telling the phone to switch to a frequency they (Verizon) do not have configured properly.

A new carrier settings update has resolved the issue for many.

I know this post was made months ago but I just got the iPhone 22 pro max yesterday. Took over 24 hours to activate and was dropping service every five to ten minutes. Where I would have to turn airplane mode on and off again. I’d have to re insert my sim multiple times. Googled my life away trying to figure out a fix. When I came across ONE comment of a woman saying it was her phone case causing the service drop. Took my phone case off. Problem solved