I’m having issues making outgoing calls with Angel Watch

You'll just want to make sure you've got everything set up right.  Here goes:

1. Confirm your SIM card is active on another device if not please activate it. For Red Pocket, go here. For everyone else, follow your network's activation procedure.
2. Connect your Angel Watch™ to your home WiFi network (SETTINGS-WIFI)
3. Check for critical firmware updates on your Angel Watch™ and update (SETTINGS-MORE-DEVICE INFO)
4. Ensure you have VoLTE switched on (SETTINGS-MOBILE NETWORKS-VoLTE)- and do not switch it off by mistake!
5. Check you're using your network's correct APN setting and select as below (SETTINGS-MOBILE NETWORKS-APN)
   • GSMT: fast.t-mobile.com
   • GSMA: Airvoice Wireless
   • Others: Search online for "(your network's) Android APN settings" and select from the available list.
6. Reboot your Angel Watch™ (SETTINGS-REBOOT)
7. Add your personal number to the watch's Phonebook using the Angel Watch™ App.  Download here.
   • Enter your number in the app in the correct format.  Include a 'plus' before your country code.  Use no spaces or dashes. E.g. For the USA, use +1, area code and number, eg. *+15551231234, or use + your country code and number, eg **+447777123123*

(An activated SIM card is always required for correct functionality.)