800 numbers are not going through my phone but works on other service providers

Hi @WiscoTaz, we understand your concern with the regards to calling and we wish to get this fixed. Please follow the below calling related troubleshooting steps: 

Try these tips to get your phone working again

• Turn your phone off and back on.
• Try calling the number again.
• Make sure your software’s up to date: Go to http://www.att.com/softwareupdates.
• Confirm you have wireless service. Make sure you have a signal. https://www.att.com/maps/wireless-coverage.html?source=IC2Y0H0000000000L&wtExtndSource=wireless-map.
• https://www.att.com/support/article/wireless/KM1011513. Press #21# on your phone and then the Call, Send, Talk, or Receiver key.
• https://www.att.com/device-support/index/9006127.

More troubleshooting tips

• https://www.att.com/device-support/index/9006135. Most phones show an airplane icon when airplane mode is on.
• https://www.att.com/support/article/wireless/KM1008711. You may have to take it out and put it back in if your phone displays Insert SIM or Emergency Call Only.
• https://m.att.com/myatt/native/deepLink.html?action=DeviceSupport&appInstall=N.
• Service suspended? https://www.att.com/support/article/wireless/KM1011528.
•  If you have AT&T ActiveArmor
  SM mobile security, you can see a list of blocked calls and why they were blocked.
  https://www.att.com/support/article/wireless/KM1212786
  
  Feel free to reach out for any further assistance.
  
   Thank you for visiting Community & Forums,
    Billy, AT&T Community Specialist.