Problem with changing phone number

Hello!

Today I became your client and when I came home I decided to change my phone number by following this instruction: http://www.att.com/olam/passthroughAction.myworld?actionType=MobileNumberChange
But I can't change the number due to an error: "Please provide valid input data. (MNC12)"

Responses

ATTHelp

Community Support

•

215.5K Messages

3 months ago

Hello there @Kromster, that's not the experience we want you to have with attempting to changing your phone number.

Let's meet in a Direct Message, by locating the chat icon next to the bell icon in the upper right-hand corner of the forums page.

What to know before you change your number

Within 30 days of activation, it’s free. You can head to your local AT&T store.
Activated your service more than 30 days ago? There’s a $36 change fee.

We look forward to chatting with you soon.

Ashley, AT&T Community Specialist

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