Include the phone number in the field error when creating a contact with an existing number.

[matthewcummings]

When you attempt to create a new contact with the same phone number as an existing contact, you receive this error: fields: {"phone"=>["Phone number already exists in your contacts."]}

It would be more helpful if the error included the phone number e.g. fields: {"phone"=>["An account with the phone number 999123456 already exists in your contacts."]}

[andreylarionov]

Good point. Most likely it will be implemented later.