iPhone 12 losing service

Yes, there are reports of the same issue with several carriers, but the problem is the same. The carriers need to change the way they configure the broadcast bands that the iPhones use. I don't understand why this didn't affect the iPhones until the 12 series came out, or why most iPhone owners aren't experiencing the problem of weak signal and complete signal loss, however.

I am having serious issues with my IPhone 12 pro Max dropping calls unexpectedly! This is happening everywhere including my house. I’m having service drop in places my IPhone 6 Plus never had. It’s constantly dropping calls. Pretty much every call. Extremely frustrated

Good analysis. Of course we could be talking about more than one problem here, maybe something like tower directing the phone to a bad choice of channel, possible sensitivity issues for certain channels within the phone, and maybe even congestion or failed handoffs between towers. Throw that lot into the mix and I would be volunteering Someone Else to do the troubleshooting.

The reports that problems often clear by rebooting or selecting Airplane Mode for a few seconds seem consistent with band or slot selection issues, because the connection is renegotiated and it is very unlikely the tower would assign the same defective combination. I have also had direct experience of a failed sector antenna on my local tower, it got to the point where I was walking along the street, on the phone to a network engineer and able to predict to within a few metres where it would fail - with the tower only 50 metres away.

My Iphone 12 Pro is consistently losing service, which led me to this thread. Considering the money we paid for these phones, this is really frustrating. It has happened everyday this week and during business calls.

I just got off the phone with the local Verizon store again. They continue to say it’s a software issue the the iPhone 12 can’t switch between LTE, 4g, 3g and so on. The Samsung phones that use 5g are working fine.

I was going to go back to an iPhone 11 Pro Max but they aren’t selling them anymore!!! So frustrated!

I have done many things to try to fix this issue. I talked to both Verizon and Apple (3 times). I have twice reset carrier settings. (Go to Settings, General, then Reset, then Reset Carrier Settings. I also switched from 5G auto to LTE. In between I had also removed and re-put in the same SIM card. After the last reset carrier settings it seems to be doing a little better but I’ll have to see if this lasts because it was dropping nearly every call or having it where I could hear the person I was talking to but they could not hear me. This was happening at my house.

I understand your frustration. I am a on call emergency heart surgery nurse and depend on my phone for hospital to get ahold of me. I have done all the recommendations tried everything they suggested and still continue to loose service. I finally got a hold of someone at apple who set up a replacement phone I am waiting to receive it and there are no problems with it. Fingers crossed

I spoke to an Apple tech support person who was extremely articulate in protecting Apple and pointing the problem back to the carrier (VZW).

It was recommended that I tell the carrier to change my plan to 4g or 3g and all would be well.

I bought a new phone, transferred my data and expected the phone to work as my previous 4 iPhones have worked.

Now I am caught between the carrier and the manufacturer with an unreliable phone.

Some of you are in far more critical need of your phone than I, such as health care and first responders.

I hope this situation doesn’t keep essential folks from life saving situations.

Why is this not being fixed?? Have you seen the number of comments? HELP!

Bajabettie wrote:

I just got off the phone with the local Verizon store again. They continue to say it’s a software issue the the iPhone 12 can’t switch between LTE, 4g, 3g and so on.

Which is provably untrue as millions of iPhone 12 owners' phones are doing this all day, every day without issue.

I seriously doubt this has anything to do with the carrier, any carrier. I have changed 5 (!), yes five, different carriers in 3 different countries and the problems were the same, regardless of who was providing the service or whether it was a virtual or physical sim.

CATManRetired wrote:

I spoke to an Apple tech support person who was extremely articulate in protecting Apple and pointing the problem back to the carrier (VZW).

It was recommended that I tell the carrier to change my plan to 4g or 3g and all would be well.

I bought a new phone, transferred my data and expected the phone to work as my previous 4 iPhones have worked.

Now I am caught between the carrier and the manufacturer with an unreliable phone.

Some of you are in far more critical need of your phone than I, such as health care and first responders.

I hope this situation doesn’t keep essential folks from life saving situations.

Why is this not being fixed?? Have you seen the number of comments? HELP!

Once again, no one from Apple is officially reading this forum, so you are only talking to other users here.

As I have stated, I and many, many others on AT&T without 5G on our plans are seeing no issues whatsoever, and I suspect the same is true for Verizon customers.

extraordinarilysmart wrote:

I seriously doubt this has anything to do with the carrier, any carrier. I have changed 5 (!), yes five, different carriers in 3 different countries and the problems were the same, regardless of who was providing the service or whether it was a virtual or physical sim.

What you don't know is whether the carriers you switched between share the same towers and thus the same equipment and switching gear at the cell site.

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.

Actually, that proves nothing.

Sadly, other phone vendors do not list the band capabilities of their devices that I have been able to find, so my theory that cell towers are asking iPhone 12s to switch to frequencies that are not properly configured on the tower seems most likely.

I have the issue too with ATT and 12 pro max. I do not lose bar strength (doesn’t say zero bars for connection) and I don’t get no sim error. I just can’t browse or use apps that require data or net. Airplane mode on then off has worked as far as I can tell. I know this differs from others here but loss of service is loss of service. I’m not planning on returning the phone as I assume at some point it will resolve. If it’s not fixed within the one year warranty then maybe I have replace regardless but I can’t see it come to that or be unresolved for that long. Those that need to have their phone work 24x7, I feel for you.

Apple is not officially on these forums, so is there somewhere they have officially acknowledged the issue?