iPhone 12 losing service

On the other hand, if your Lamborghini broke down every time you got gas at one particular gas station chain, would you continue to get gas there or blame Lamborghini?

It appears the issue is the cell towers are telling iPhone 12s to communicate with the tower using a frequency the iPhone 12s support but the towers aren’t properly configured for.

This causes iPhone 12s to report no or low signal when other cellular devices (that have not been assigned to the channel in question) do not.

The solution is to either reprogram the cell tower base station controllers to not assign phones to use that frequency, or to properly configure the tower to be able to use those frequencies.

Did you chat with Apple support using their app? I did chat couple times with time, then of course they can’t fix it thru chat, so they said someone higher will call me the next day, they did. After couple times of complete resetting, I told the lady. I used my phone to work, to call patients. I can’t have a phones not reliable. Apple did order replacement for me. When I got the replacement phone, I called Verizon and told them my connection issue, they set up my phone differently , with primary and 2ndary connection. Then my phone did not have lost connection anymore. Still not able to use the 5G service where I live, but not disconnected.

If your phone network speed isn’t also as promised or what you expect, it is also your providers issue. The reason they are not properly connecting is your provider. They must update towers to get these devices connected. Sadly, they have not done so everywhere and are rolling the dice. They know what the issue is and decided to let the customer, us, deal with the incompatibility issues with the towers. When we stream enough, then they will update the one tower. When affordable I will move from Apple as they created a phone with issues on how 5G was implemented and how fallback was implemented. In the end, your provider is ultimately as fault, but Apple knew they created a problem. best thing. Return the Apple device until you get one that works or change models. Nothing wrong with that.

The iPhone 12 supports more LTE bands than prior phones did.

When a base station controller sees a device that can use those bands, as fewer devices support them the controller will be more likely to assign the phone to use those bands to avoid congestion.

However, if the cell provider hasn't seen devices use those bands, it may not have taken the time to optimize those bands as much as those that are more heavily used.

For example, for the iPhone 12 Pro:

FDD‑LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 66, 71)

For the iPhone 11 Pro:

FDD‑LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 29, 30, 66, 71)

So as an example, if you have an iPhone 11 Pro, you may see no issues whatsoever using the 11 Pro but no signal with your 12 Pro if the base station controller assigns your iPhone 12 Pro to use FDD-LTE band 28 or 32 and the tower isn't properly configured/optimized for them.

Slightly newer modem firmware version in iOS 14.2.1. Time to test it out.

Verizon sent out a carrier network settings update today. Version 44.0.1. I’m actually getting better signal retention now. Will try on Saturday a trip to the OC.

Update:

Spoke to Apple support a few times, tried everything in the book. Ultimately nothing worked and the service center confirmed the device is faulty. I’m getting a replacement.

I found out that when Apple sent me a replacement, that if I erased either phone and just set it up using cellular, I could tell right away that it was working better.

This issue has nothing to do with Verizon, ATT, 5G, which antenna you're connected to... It's an Apple issue. Don't know if software or hardware but definitely an Apple problem.

I know because I've got the same issue with my 12Pro and I'm in Europe, dual SIM so no 5G possible. Traveled to Dubai and Kenya with it. Had same issues there. And with Covid confinement, I've been stuck at home for days now, so safe to assume I'm on the same antenna all this time, and still, the issue is there.

I'd switch phone off, go airplane mode, clean the SIM, etc... nothing does it. Phone goes on No Service after a random amount of time - usually an hour or so.

I went to T-Mobile today and swapped my sprint sim for T-Mobile sim. The girl there also confirmed everyone having this issue, has a sprint sim and this has been solving it by switching to the T-Mobile sim. Don’t know if it’s bs or not will tell tomorrow when I go to the park I have the most issues at.

Update: i managed to get my phone to work by downgrading the network from LTE to 3G. If I leave it at LTE I can’t make and receive calls. This is a temporal fix as 3G speeds are not ideal for me as an IT Consultant and a farmer.

If it is under 14 days since receipt, return it.

If you are in Europe you can do that after the 14 days by law.

If you have photographic evidence that another ip12 in same house can get good 5G on the same provider then surely the phone has a problem. Try support again .

I don’t know if this is helpful or not but it’s for sure interesting. I’ve been having the same exact issues as everyone else and ive tried everything!!! SO I decided to turn on wifi calling. Since then my cellular service bars haven’t dropped nor received the “no service”. I haven’t had the chance to leave my house and try it while it’s on and see if It still works.

I know what some will say..you’re on wifi so that’s why you have service BUT the phone would say no service regardless if I had wifi or not. Try it out and let me know if you are experiencing the same thing as me. At least now I can get phone calls at home and carrier text messages!!!

Ok UPDATE TIME (GOOD NEWS...kinda):

So I’ve been in this thread since the launch of the 12 Pro Max day and have had no success just like the other people. I did everything...talked to T-Mobile/Sprint and Apple for weeks to no avail. But I ACTUALLY have a working phone now. The only thing is, most of you are probably not going to be happy with the solution.

I ended up taking the huge risk of switching from T-Mobile and I went with Verizon. This was a big risk in my mind because 95% of the reported issues on this thread were with Verizon but I was having the issue with T-Mobile/Sprint.

So I was so tired of the situation and Verizon had an amazing switching Black Friday deal so o took the leap of faith.

Happy to report that my 5G/No Service/Slow Service, whatever you want to call it (the problem we are all having) is completely gone now that I’m on Verizon.

I get perfect 5G speeds (60mbs down 10mb up non ultrawide band) wherever I am in the previous problem area (my home).

SO if I had to give some advice, it would be switch carriers honestly. My best bet would be that they obviously use different towers (since it now works for me). It could possibly be a “quick” fix to the issue if it works just like it did with me. I understand this is probably not a possibility with many and that it won’t be possible for lots to return/do what they have to in order to switch. That’s why I said it was a great solution for me, most likely not for many however.

ANYWAY I hope everyone in the thread figures out a solution/and or Apple and the carriers figure their crap out. I’m super relieved that everything works on my end finally. All it took was switching to Verizon LOL (I know a lot of you will read that and roll your eyes since you’re already there).

All the best.

Sorry if I missed this within the thread. Was getting my phone ready to send into apple and I turned off 'Find my phone' and like magic, all my data/service (Verizon) problems went away. Can someone else five this a whirl and see if the same happens? Again, sorry for being a blind doof if this has already been mentioned.