Do I Need To Know The Contact’s Wireless Carrier? Albert March 23, 2018 13:26 Follow No, you do not need to know any contact's wireless carrier. For information on the wireless networks we cover, click here and scroll to the bottom of the page. Related articles Send-From-Phone Feature Will I Be Charged For Messages Sent To Inactive Or Home Telephone Numbers? Comments 0 comments Please sign in to leave a comment.