Sporadic dial tone on iPhone X

Hi there BenfromHove,

Thanks for that follow-up information. Were you able to verify your iPhone is updated along with your carrier settings? That may be helpful in resolving the issue.

Also, to double-check, were you able to get in contact with your wireless carrier? If you've completed all of the steps in the article below, short of restoring the device, that would be your next best step: If you can't make or receive calls on your iPhone.

Kind regards.

Hello BenfromHove,

Thanks for the post in Apple Support Communities. I understand you're running into some issues with dial tone and making calls on your iPhone.

You mentioned this happens intermittently. How often would you say it happens? Does it happen when you're in a particular area? How about when you're on Wi-Fi as opposed to cellular data?

Knowing the answers to the above might help identify a few specific steps, but I have a link that's a great place to start in troubleshooting this type of issue: If you can't make or receive calls on your iPhone.

I hope these steps help.

Kind regards.

Hi there BenfromHove,

We appreciate that follow-up information. Knowing that the issue happens on both cellular and Wi-Fi is helpful. In your first message, you mentioned that it's hit or miss if the call connects. When it doesn't connect, what exactly happens? Do you get any "call failed" alerts, or other messages?

Are you using iOS 12.1.2 under Settings > General > About? If not, I recommend updating as a next step: How to back up your iPhone, iPad, and iPod touch and Update your iPhone, iPad, or iPod touch. After updating, or if you're already updated, it's a good idea to double-check for any carrier updates as well: Update your carrier settings on your iPhone or iPad.

Cheers.