AT&T Mobile calls to Verizon Mobile numbers sometimes goes to dead air

Hello, @hconstantzos. We understand how important it is to be able to place calls to customers on any carrier, and we're here to help. 

Here are our best troubleshooting suggestions: 

• Turn your phone off for at least 30 seconds and then power the device back on to reset your device and your network settings. 
• Be sure you have the most recent software update installed on your device:
  • Go to Device Support.
  • Choose or change the device brand and model.
  • Select Device diagram.
  • Scroll to More Device Help and select Software updates if it’s there. You’ll only see it if there’s an update for the selected device.
• Lastly, you can also use our real-time diagnostic tool for more personalized troubleshooting. 

Let us know how these worked for you! If you require additional assistance, please don't hesistate to reach back out. 

Thank you for contacting AT&T Community and Forums. 

Goodacre, AT&T Community Specialist 

As I mentioned, this has been happening for over a year. I restart my phone every other week, and power off and power back on my phone the weeks I'm not restarting it. I also have auto-updates turned on so that I immediately update to the latest OS as soon as it is available. 

Hello, @hconstantzos! Thank you for letting us know the troubleshooting steps you have already tried.

Let's meet in a Direct Message to further troubleshoot your calls to Verizon customers. Please check your Direct Message Inbox (it's that the chat icon next to the bell icon in the upper right corner of the Forums). Once you are there, we continue this over phone or in chat if you prefer.

Rachel, AT&T Community Specialist

I've tried a couple of times to join the chat, but no one is there. Unfortunately, I am not able to join chats as soon as I receive a notification that someone can chat with me. Can we setup a time for me to chat with someone?

Hey hconstantzos! Just let me know a good time to send you the verification link?

Rachel, AT&T Community Specialist

Today at 2:30 PM Eastern US would be a good time. Do I need to log back in to receive it, or can you email it to me?

I'm currently having the same issue. Was anything ever resolved? I spent 2 1/2 hours on the phone with At&T and they say it's not an issue on their end. That is true, because AT&T customers can leave voicemails as well as T-Mobile, just not Verizon (that I know of so far). Even worse, when I try my phone from a landline at work which requires a 9 to call out, it gives me a busy signal. I'm clearly not on my phone while calling myself. Yet, when you call from a normal house landline, it does go to voicemail. What in the heck is going on AT&T? Most of my friends use Verizon and I can't get voicemail from them? I guess I'll switch to them if this can't resolve itself.

(Writing this is probably as useless as blowing in the wind because I know I'll receive some auto-response asking me to reboot my phone etc. Again, two and one half hours with tech support today, and they couldn't tell me what's wrong.)

No word yet. AT&T looked into it and everything works from their side. Verizon looked into it and everything works from their side. Meanwhile the problem still exists.

I have a friend with AT&T who calls my Verizon phone and complains of this all the time. She's the only one. No one else, no matter what service provider they have, has this issue.  

I narrowed it down to it happening whenever this one person's phone is connected to wifi. She has wifi calling turned on. It also seems to happen with another friend. One has an iphone and the other has a samgsung. Maybe it's a wifi calling issue.