Unable to receive or make calls from iPhone post iOS 18 update

Hello,

I was able to fix this over the weekend. In my case (iPhone 13; iOS 18.0.1):

-Incoming calls (excluding FaceTime) would not ring and go straight to Voicemail. This issue also left no missed call notification. I would only get Voicemails

-SMS Texts would fail to send (not including iMessage)

Solution: My carrier reset my line connection on their end (AT&T 611) and calls started coming in. After, I turned off RCS Messages and the SMS Texting started working again.

RCS: Settings > Messages > Scroll down to RCS > Toggle Off

Hope this helps!

-JippyJay

Having same problem. Since IOS 18.1

cannot make calls or send messages.

I can receive both. Reset Network settings and phone worked once but then not possible… have tried all suggestions on Apple help pages

I’m having all kinds of issues with trying to make a call and having the call connect since downloading the update. I wasn’t planning on downloading this update yet, but my phone did it automatically.

Hi… I had a word with apple support, they confidently told me that they will resolve the issue … they have taken many screenshots along with logs and everything, but after 4-5 days of waiting for the revert, I got the revert that it’s from Carrier ??? I said how come it be possible as my surroundings are also using the same carrier but they are not facing any issue … THEY HAVE NO ANSWER??? Apple had intentionally created this for old device .. so that their new device make market presence. Very BAD STRATEGY.

I have this issue as well, I think Apple is not interested in addressing this issue since it’s in older phones only . In my iPhone 12 all calls fail , I mean WhatsApp calls , FaceTime calls , carrier calls etc., I don’t know when I can make a call because all of a sudden it gets disconnected with call failed and then only after 10-15 mins I might be able to make a call again.

Anyways I waited for 2 months now , I am switching to android this week. My mom’s Motorola is wayy better than this ****** iPhone. So I think it’s time to switch.

Some people are reporting that going to the carrier’s location or calling their support team they were able to resolve the issue.

Some people are talking about WhatsApp and some have received help from WhatsApp support team.

Pole has intentionally done that with lower iPhone variants … there is no issue in iPhone 14 and above .. only iPhone 13 and lower variants are getting the same issue.. Moreover, apple care doesn’t bother about it, they only reply that its carrier issue…

No they haven’t. Have you taken a moment to read entire thread this issue happening with iPhone 16 pro max as well with new IOS,

nothing to do with having to make you wanna buy a new phone or upgrade..

Have this problem as well, we all do. On a whim I turned Cellular Data off. Was able to make over a dozen calls without a single drop and call quality was much improved as a result. On AT&T set Cellular data to LTE and Low Data mode and enabled WiFi calling as well this throttle Cellular Data down routing wore over WiFi calling.

Try and share if it works for you!

If it does for enough people maybe Apple will take notice and fix it

Try turning off WiFi and under Cellular Data options set your Cellular data NOT to use 5G, try LTE and set to Low Data Mode.

See the call drops end and call quality improves. Anecdotal but I done these settings on several iOS 18 upgraded iPhones and it’s helped all of them.

Also trying with WiFi and WiFi calling enabled and Cellular Data off and it help but not as much.

If others can try this and it works for them maybe we’ll be one step closer to have fixing this…

Have you done a forced restart?

Force restart iPhone - Apple Support

Have you contacted the support team at your cellular service provider? If so, what did they say?

Restart the phone and try. It worked for me

Hi… I have restarted the phone … RESET THE PHONE, Update the software also . But all in Vain . Apple had intentionally doing this for old iPhones

I am not sure route cause clearly, but it seems that after updating the OS, the phone overheats while charging, and this likely caused damage to the SIM card.

Having same issue but my sms and data is working. I am unable to receive and make a call. Device iPhone 11 Pro 18.0.1