Trying to call my husbands number and it can’t go through and he is right next to me

-Make sure your iPhone is on the latest software by going to settings/ general/ update software

-Check for carrier updates: Manually update your carrier settings on your iPhone or iPad - Apple Support-

-How many cellular bars do you have, and how many cellular bars does your husband have?

-Turn Airplane Mode on and off. Go to Settings and turn on Airplane Mode, wait five seconds, then turn it off.

-Check Do Not Disturb. Go to Settings > Focus > Do Not Disturb and make sure it's off. Learn how to use Focus on your iPhone or iPad.

-Check for any blocked phone numbers. Go to Settings > Phone > Blocked Contacts.

-Check Call Forwarding. Go to Settings > Phone > Call Forwarding and make sure it's off.

-Check Silence Unknown Callers. Go to Settings > Phone > Silence Unknown Callers. If the setting is on, a caller must be listed in your Contacts or Recents. Or they must have shared their number in Mail or sent you a message using that number in order for their call to go through. Add their number to Contacts to ensure the phone rings. Calls from some third-party apps might not go through.

-reset your network settings:  Go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings. This will erase all current saved settings, including Wi-Fi passwords, preferred networks, and VPN settings.

If those steps don't resolve your issue then you'll need to reach out to your cellular provider for more assistance. Calls are usually an issue on the carrier end of things.

See these articles for more assistance: If you can't make or receive calls on your iPhone - Apple Support

Cell phone calls don't go straight from one phone to another. They travel through the cell phone network.

So if you're sitting right next to your husband, in a cellular "dead zone", it doesn't matter that you're right next to him. If calls can't get from your phone to the cellular network, or from the cellular network to his phone, they will not go through.