Signal says no service and I cannot make any calls.

Hello @deloknows we can understand your frustrations with being unable to make calls using WIFI and we'd love to engage with you to resolve this.

To provide you with the necessary next steps, we'll need more information to identify a solution: 

• Are you able to make and receive calls on the cellular data network? If not, this could be a provisioning error with your devices network.
• Is your Wi-Fi network established and working properly? or receiving any errors when attempting to connect?
• What's the make and model of your device? (We'll confirm if your phone supports WIFI calling and how to properly set it up.)

If you'd like, you can utilize our Troubleshoot and Resolve tool at your own convenience, for helpful tips and more personalized troubleshooting.

Let us know if we were able to help!

Ashlyn, AT&T Community Specialist