"Last line no longer available" on iPhone 13 Pro Max

i’ve also had this on iPhone 13 Mini.

i have no idea what sims are on this thing (1, 2, micro, -esim) or how apple store provisioned it for ATT network.

I backed up iphone 8.

in the store, had to upgrade new 13m ios before restoring.

Then restored to the new phone.

everything worked peachy for a week, used new phone in the northwest U.S.

then flew home to midwest.

made some calls and textx.

then i made a call and got same cryptic message, “last line no longer available, want to use the othe/“

so i said sure, not knowing what other line…

never had dual lines on a phone.

call to same person still didn’t work, but ither calls did work.

cleared recent call history.

problem went away BUT one number in my favorites, total fail.

Person calls me, no ring, straight to VM, but i get neither VM nor texts.

I call them, same deal.

called ATT, they sent some code to my phone with power off.

still not fixed yet.

we also tried removing the ‘att call protect” spam blocker app and all its data, it had been showing weirdness.

tried turning off “silence for unknown callers.’

I’ve multiple times done hard-power-off - up/ down / hold-power.

real mystery here, and now it’s just one of my contacts not working far as i know.

this would be a great phone virus.

no one gets any calls, except spam (those still often seem to get through).

friends break up because ‘no one calls back.”

Society collapses.

I had this same problem and I cleared my recent list and it worked for a bout a month. Now when I use apple car play it wont dial unless I pick up my phone and go through the "Last line no longer available" message. This did not happen on my Iphone 11 Pro. Just now that my wife and I have upgraded to the Iphone 13 Max Pro.

No one's sure why it does that, but if you just tap "Call" it always seems to place the call just fine.

Hello Sammmy1004,

Apple Support Communities is a fantastic place for help with your iPhone 13 Pro Max. To ensure we're able to provide the best support can you clarify where you're seeing this message? For example, is it showing in a specific app? If so, what app is the message showing in?

We look forward to working with you!

Just happened with my new iPhone 12 Mini, iOS 15.1 on T-Mobile which I've been using for less than a week. I'm guessing it's the dual SIM or eSIM conflict, so I cleared Recents and it didn't happen again when I made another call. I'm hoping it fixes it for good!

Thank you for the explanations, Sammmy1004 and TreyinSD!

P.S. When the message first came up, I selected Use the Remaining Line, and it rang through like normal.

I have the same issue with my iPhone 13 Pro Max. It never happens with my iPhone 13. It happens 100% of the time for 3 of my contacts, some of the time with others, and never with others. Oddly, I've tried deleting those offending contacts and recreating them. Same thing. I've tried deleting the contacts and calling the phone numbers directly and same thing happens. I've tried deleting my entire call log (something I routinely do anyway), and same thing happens. I have closed apps (something I routinely do anyway) and rebooted my phone (something I routinely do anyway, and the problem persists. I've reset Network settings at least 3 times.

I've reported in this thread weeks ago that I began experiencing this issue when I got my iPhone 13 Pro Max. I've done everything recommended in this thread. And I've done it all multiple times. I continue to experience the problem. Furthermore, my husband experiences the problem with his iPhone 13 Pro Max. Both of us just happen to have iPhone 13 phones for work. NEITHER of the iPhone 13 phones experience this issue.

For whatever reason, i get this message the first time I select a number from my recent calls, after I call it, i no longer get that message for that particular number, a bit strange, seem like a bug which needs to be updated in next version of software

Just trying to place a call from my favorites and I get the same thing. I’ve cleared out recents but that had no effect. But it works for contacts.

Clearing current recents is a temporary fix. It happens again after a number of recents build up. Is there a permanent fix to that annoying message?

Ed 84YO user

Nope. When i tap call, doesn’t. Can’tvremember failure mode, but certain of my contacts i could not call, then clearing out all recent calls sort of (mostly) fixed. But not entirely.

I just woke up to this issue. I have an iPhone 13 mini. I upgraded from an iPhone 8, did not change my number. And never had a dual sim. It happens when redialing recents or dialing from contacts. I can dial independent numbers. I am using iOS 15.0.

I’ve been having the same problem for about a week. I posted on here but no one’s helped me either. Does yours do it whether it’s from recent calls or your contact list? Only asking because mine does it in both. People say to delete your recent calls if it’s happening from your recently called numbers. I did that but it’s still doing it on my phone. I was hoping the last update (15.1.1) would help but that didn’t do anything either. I may have to bring my phone to Apple to see if they can fix it

I just got the iPhone 13 Pro Max about 5 days ago. The first time I received that exact same error message, I went back to the Verizon store and asked them what was the problem.

The tech said that the cellular was turned off. He turned it on and it was fine until today when I started getting that message again. So I googled the error message, ended up here, did what it suggested above and voilà! It worked like a charm. Thanks for the info.

Ok, as to the not being able to call: false alarm. Somehow i fumbled the “block contact” to “on” while handling the phone. So, scratch that issue as resolved.

now, as to the “use your other line?”, i will try removing the sim after i find out how to do so.