I have been getting Error code 600 from my SG3 everytime I try to text or call and none of my calls are going through and I contacted Sprint and they performed a hard reset of my phone. I had to make sure I backed up all of my photos and contact information and any text messages that were important, but once I did that they said I should be okay. We will see. I usually get the message when I am at work since I do not have any service for the past three weeks!!!! I only get great service when I get home since I have an Airave device ( a mini cell tower in my home).
Thanks for reaching out to us. We apologize for the delayed response. We wanted to follow up with you to see if you're still experiencing issues with receiving an error code 6 on your phone? Please let us know? If you are, we'll be happy to look into this for you.
Sprint Social Media Care