Samsung Galaxy Is Unable to Text or Call on CDMA Network


  • Cannot send/receive calls or texts
  • Following message displays when texting, "This phone isn't activated. Do you want to activate this phone to send text messages?"
  • "Unable to send message. Please activate your phone"


  • Samsung Galaxy S8
  • Samsung Galaxy S9
  • Samsung Galaxy S9+
  • CDMA cellular network


  1. Tap Settings app 
  2. Tap Connections
  3. Tap Mobile Networks
  4. Tap VoLTE to turn off (the slider is gray and to the left)

Additional Notes

The CDMA network does not support VoLTE (simultaneous voice and data connection). For more information please see: Can I Use Cellular Data or Texting While Calling on CDMA network?

Article Created From

  • 1670729

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