iPhone 12 losing service

Do you get a stronger signal from other T-Mobile cell towers? I know that Verizon has been reconfiguring their towers. Perhaps T-Mobile changed the config on your specific tower. In my experience with several phones experiencing weak and no signal problems, the front line support staff at Apple and Verizon didn't have a clue about how to fix this. I suspect the T-Mobile support folks might not either.

Yep! Have two iPhone 11’s with a strong signal and 2 iPhone 12’s with no signal and they are in the same house or car. They are sold out of the iPhone 11 Pro Max so I can’t go back and I can’t use the 12 pro max. Spent too much time between Apple and Verizon trying figure this crap out and beyond frustrated

UPDATE on my issue: I returned my iPhone 12 Pro Max for a full refund and ordered a new one. The new one seems fine, haven‘t had any issues thus far (1 week). (Same carrier, same SIM, just a different phone now).

If it has nothing to do with carriers, why are millions of iPhone 12 users having zero issues whatsoever?

I'm not saying you're wrong, just trying to understand why only some are affected if it's truly a baseband problem.

I'd also be curious as to what makes you say that it is in the first place.

I’ve been watching this discussion and can’t understand why someone that claims to have zero problems is constantly commenting in the first place. Why are you here?

second, the reason why so many many not be experiencing problems is simply because it may very well be a hardware issue with the phone. Modem, Antenna, etc..

Just to be clear. When manufacturers build products. The have multiple manufacturing supply chains that provide all of the different parts.

That’s why when a certain product has a fault they can usually track everything with serial numbers back to the production line of a time period and plant number.

If one of those supply chains had a bad run of a certain part and was dispersed and installed at several factories, this would make only X amount of devices have a problem.

Again this is only speculation from how manufacturing issues can take place in general but a likely scenario

whoever you are, you have no right to tell people here what the problem actually is and if your not having an issue yourself, you should not even be on this forum.

The behavior you are exhibiting here on this thread is what is known as “Trolling”

I suggest you just let everyone tell their story and let Apple take all of this feedback and figure out what the problem is.

If it’s hardware or software or if it is found definitively to be a carrier issue, Apple will then come out with their official findings and provide a resolution.

Happy Holidays to Everyone!

Had to return two 12 pros. Apple recommend that return these to be replaced because the PRL number was a 1. It is supposed to be a string of numbers. Usually five numbers. A PRL that is 1 is a disconnect number meaning the phone want look to reconnect because it thinks it doesn’t have a SIM card. Toggle the the airplane mode switch to force it search was the only way to reconnect. Check your PRL number. If it is 1 then you have the same problem I had. Good luck and Merry Christmas.

Yes, I have to believe there is a problem with the Modem Chipsets in the iPhone 12 Pro and 12 Pro Max. Or the problem is the modem chipsets and the 5G Cell Towers. As I know people using the regular iPhone 12's on AT&T saying there are not experiencing these same problems as I am with the 12 Pro's. Now in the meantime I Disabled 5G on both our new cell phones and not having any issues with dropped phone calls, loss of audio while driving or stationary or someone complaining they can't hear me and hang up on me.

So it seems my iPhone 12 Pro issues are something to do with the 5G cell towers, my Qualcomm Modem Chipset or a combination of both. Apple & Verizon need to get their act together and stop touting all these 5G Network Technician commercials you see on TV like everything is in perfect harmony. They have some very serious technical issues to resolve.

Dunhill421 I’m here applauding you, o wish I could send you a HomePod mini too. Thankyou for your response. The fact that the issue is so frustrating, these “trolls” are soooooooo annoying. Definitely needed and the timing brilliant.

happy holidays everyone.

I hope you all enjoy, are safe and have a wonderful prep for 2021

Why somebody continues saying it is not an Apple problem? I live in Italy. For sure I have different carriers from US (iliad). I have had an iPhone 8 working very well with my carrier for years, same SIM. I tried buying two different iPhones 12 mini and both had the problem. First time I asked for a replacement. Second time I asked for my money back and I’ll stay with my old iPhone 8 until Apple solves the problem. Hope soon. I suggest everybody does the same. Apple will have serious image consequences if it doesn’t start to acknowledge that iphone 12 series has a problem.

Pretty sure PRL only relevant to CDMA (like Sprint and Verizon). Doesn’t account for those of us on native T-Mobile, AT&T or other GSM providers. Sprint users are now technically T-Mobile so some of those users may need PRL updates since sprint was previously cdma.

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.

As a PS to William, if our problems continue to preoccupy you and you continue to NOT experience these problems, I’d suggest meditation or a new hobby that doesn’t involve telling a bunch of people with legit and verifiable issues that they’re wrong.

You will not be able to point to a single post where I've told people with issues that they were wrong, simply because I've never, ever said that.

All I've done is offer possible explanations, and the most likely explanation to date is that this is a carrier configuration or equipment issue, not an Apple issue.

I've explained why I believe that; you are free to believe that or not, it really doesn't matter to me.

However, if I see a statement stating that these phones are clearly defective and they all need to be recalled because they don't work, I will point out that's definitely inaccurate.

justlaur wrote:

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.

What have your carrier and Apple Support said when you've relayed these details to them?