iPhone 12 losing service

Just got my new apple12 for Christmas and calls keep dropping pretty much every time in the middle of conversations or at the start of calls that won’t go through. Did not have this problems with my Apple 8 phone .

Just upgraded to iPhone 12 and two days ago started to drop cell service. I have to turn phone off and on to get service back. I had Apple computers, phones, and iPods. 3 years ago I switched to Google pixel 2xl. I had that phone for 3yrs without a problem but really wanted to get a Apple Watch and upgraded(or so I thought) to an iPhone 12. This does not make me happy with my choice right now.

Incorrect. I bought an iPhone 12 in red this past sat on 1-2-21. Love the phone love the color and I bought this bc my cousin has aids and it’s nice to see some of the money for the phone going to research to help cure it. Phone worked great the rest of sat and Sunday. Then Monday I’m on the phone all day with it working fine and it randomly ended my call saying no sim installed. Well I restarted phone thinking that’s the best thing to do. Tada my service was back. A min later dropped call again and same message no sim installed. I tried everything after that to figure out what’s wrong. Restarted it took sim out out it back in. Reset network settings reset general settings did everything you could do besides reset phone. I went to Verizon and they took my sim out and put it in everyone of the display phone with the service connecting immediately making test calls to their personal phones. The sim was good so I went back to apple store. Hooked up phone on diagnostics said phone checked out but every time they took sim out and put it back in the same message came up as no sim installed. They grabbed new sim activated it and still same message. Ended up replacing my phone on the spot with same exact one. Noted it down as a hardware issue. So far no problems but if it happens again I’m turning this is and making them give me the iPhone 11 Pro. I will not downgrade from the 12 to the 11. It’s crazy you spend all that money to get a defective device I thought I was the only one experiencing issues. I’m glad I’m not. Apple needs to fix this problem or give us our money back or let us trade in our phones. No use in having an expensive decoration that looks good but you can’t really use. I’ll keep this updated if I have anymore problems!

I have iPhone12 Pro Max with physical SIM for ATT and an eSIM for Tmobile. Does not matter which carrier I use I am getting long delays before connecting if it connects at all. I have been getting several failed call attempts in a row.

When I do connect I am getting scrambled sounds as if people are trying to talk but when I finally get through people will tell me they could not hear me speaking at all.

This is an unlocked phone purchased direct from Apple.

My 11 does not have this problem. Do not buy this phone unless they push updates, if you are having the same problems make sure you post and describe it so this inspires the company to either fix or replace the them.

I have also The problem that my iPhone 12 has no service. I have KPN NL and I experienced it a lot of times. I also have the problem that my phone only connects to 3G instead of 5G. Anyone who knows what it is or how to fix it?

Just got off the phone with Verizon tier 2 support. They told me that they are waiting for Apple to fix this problem via software. They stated that Apple is starting rolling out iPhone 12 specific versions of iOS 14.3.1 based on build configurations. I haven’t seen an update past 14.3 yet. 

Same issue, I don't even have to drive. I loose service when marked and can see my status bar change from 5G back to bars and then back to 5g and keeps saying no connection. Very frustrated, either push an update or sense solutions. I have also noticed that because if this my battery life does not last long. I can go from 100% in the morning to 20% by 1pm, and practically have to keep it on a charger as much as possible, I will be looking to send this phone back for a full 1,000% refund.

No help here, but commenting that we've tried everything. Tmobile worked with us for three days with no results. Contacted Apple and they said the issue is with tmobile, even though we have multiple devices with tmobile with service, except the iphone 12. Their senior advisor was an arrogant petulant fool that took offense after i mentioned that the issue wasn't an isolated issue to Tmobile; I invited him to read the 1000s of comments here, including a published article from Forbes, from people from multiple carriers. Hoping someone has an answer.

I am Verizon. They need it ship you a physical SIM card plus Apple digital sim. They active both. When I told Verizon my issue, they activists SIM cards differently. It seems been working so far, 2 weeks so far.

A senior service advisor told me last night it wasn’t apples problem to fix my carriers network issues. So rude and so unprofessional. He got even more aggressive when I mentioned the 1600+ comments here complaining of the same issue. Hope Apple is really working on this.

I got with technical support and they got on looked around and said if it happened again they would have to reboot the phone or replace. Since that time I have not lost service again. Not sure if it’s fixed or just has not happened again yet.

I have literally the same problem. Strangely enough I even picked up my phone on Friday, activated on Saturday then drove 10 minutes (to the the AT&T store to drop off my old phone) when I noticed I did not have cell service. At this point I have:

-Spent 2 hours at the AT&T store with the manager and another employee who also called customer service.

-They changed my sim to a new 4G, then a 5G then back to my original from iPhone 8, nothing worked.

-They called tech support who reregistered my phone and checked the IMEI and the ICCID all ok, they reset my networks and returned the phone to factory settings. No dice.

-Ultimately told me the device was defective and I needed to return it to Apple.

-I went to the Apple store. They could not make it get cell service so gave me a new phone.

-Logged into the new phone, still no cellular service.

-I can make and receive calls, and green texts, but no blue texts or internet or facetime

-I spent 4-5 hours on the phone with Apple who told me that my LOCKED SIM was the issue and needed to be unlocked by AT&T so I went online to AT&T to get my sim unlocked. That did not work.

-I spent a few more hours on the phone with AT&T who told me they had seen the issue and after doing all of the same trouble shooting I needed a special code on my phone but a manager needed to do it. I waited two days and called back. No update.

-I waited 2 more days and called AT&T again who told me the case had been closed and my voicemail issue was resolved. WHAT??

-I spoke with another person at AT&T who did all of the trouble shooting again with no luck and said she would have to reopen the ticket.

-Today I called AT&T again spoke with yet another person who did all of the trouble shooting. She engaged her manager and finally told me to go to AT&T to get a new 5G sim card which I did. No luck.

Any ideas that could help me get this paperweight to work as a cell phone?

The bottom line is it seems to be a configuration issue that only AT&T can sort out. The "No Service" message means AT&T's cell towers are not properly recognizing it and allowing it to connect to the AT&T network - and that's either a database configuration error, a SIM card error, or both.

Not getting Internet is a cellular data configuration error on AT&Ts part unless you are connected to Wi-Fi.

AT&T is a pretty good carrier, but when things go wrong it can often be quite the nightmare before you finally reach the person who can indeed resolve the issue.

A great way to test this sort of thing is to have them take the SIM card from your phone and put it in a different phone (either iPhone or Android that takes that size SIM) and see if it reports receiving service; if it doesn't that proves the issue is on AT&T's end.

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.

It is. It accesses the same bands. Plus the iPhone also isn’t working properly on LTE only. It drops service consistently throughout the day. I’ve now put the bell LTE sim in the phone which does not have 5G access and same thing. Drops out consistently. It’s pretty clearly an issue with the device at this time.