iPhone 12 losing service

joxesCA wrote:

Went this morning downtown to get a coffee. Went inside the store. When I got back to my car and I looked at the phone it was saying "No service". Go figure out. I looked at the Android 5G and the device did not lose service.

So nothing with the carrier otherwise the other device will have lost service too.

So software and/or chipset issue.

I’m not sure you have proved anything in this observation. The two different devices are likely to support a different subset of bands. It is more likely than not that the tower assigned them to different working frequencies within their bands, if they were even assigned on the same band.

I don’t doubt you are seeing poor cellular performance. What we don’t know is what is causing it. Radio waves can show what seem like strange behaviors, particularly at microwave frequencies. You don’t even know whether your iPhone and Android devices were talking to the same tower, or whether the radio links were getting a clean signal from the tower. There is insufficient information to make any useful conclusion about cause.

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.

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

Dunhill421 wrote:

Next time you lose 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 lose 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.

Losing 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 lose service......

While that is a theoretically accurate summary, I have reached out to Apple Support to have them investigate whether there are steps in negotiation with a cellular base transceiver station that can indeed cause this field to read "NO SIM" as it would be useful to find out if this is a cause or symptom.

Thanks to those who have found this.

I have been contacting support about the same issues of having the "iPhone not activated" notification pop up on my home screen for several weeks on my iPhone 12 pro. Today they decided to send me a new replacement device. We shall see if this solves the problem.

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!!!

My 12 pro max has been doing the same thing. I am on sprint/T-Mobile. Resetting the phone/network settings has yielded the same issues. The phone calls coming in will sometimes go straight to voicemail when the phone isn’t even being used. Calls will just drop on lTE/5g and WiFi. A lot of times the other end of my calls will complain about the quality of the call.

this is beyond frustration for the cost of the phone.

I never had this issue with my 11 pro max. I wish I would have kept it another week as I would have sent the 12 back!1

I can’t tell you how much your points are the same as mine. My thoughts EXACTLY

the fact that it’s so consistent is frustrating to say the least.

”as much as we pay for these phones, it’s really not acceptable”

Iv literally had to buy “another” brands flagship phone just to keep business

Ran into this issue today. T-Mobile in Brooklyn, NY. The phone lost service. Calls and messaging failed. Browsing did not work. Restart fixed it but this is super sketchy — especially if you are far away from a charger.

To the bozo that keeps mentioning the ‘wall st. analysts’: let me guess you just discovered Robinhood and bought AIrBNB at $170?

i am having the same issue with my phone 12 pro it will flash on and off saying no service for about 3 to 5 mins before connection back online with full bar with lte before going back to 5g . i am thinking its must be an update coming out to fix it

Same issue. I have iPhone 12 pro max. Optus network in Australia. eSIM. Loses 5G and LTE. Shows 3G network but sometimes can’t access data or make calls. Always loses calls/Data in one spot when I drive to work, where handover has to happen to next tower but it does not. Never had similar issues on iPhone 11 Pro Max. I hope it is a software issue.

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