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Cannot add mobile number to online account. H400.70.3: This Mobile Phone Number already exists.

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Cannot add mobile number to online account. H400.70.3: This Mobile Phone Number already exists.

 

I am trying to add my mobile number to my online account, and get this error:

 

This phone number is already associated with an XFINITY account

We cannot verify this mobile number, as it is already associated with another XFINITY account.

SH400.70.3: This Mobile Phone Number already exists.

 

 Thank you-

Official Employee

Re: Cannot add mobile number to online account. H400.70.3: This Mobile Phone Number already exists.

@tanneregan - I got your private message, thank you! I will reply back with the details in a second. 

I am an Official Comcast Employee.
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