If you believe a phone number has been mislabeled as spam or want to report a number that appears to be nuisance/spam or fraudulent, see How to report potential call blocking errors. Xfinity will review submissions and may change how future calls are categorized or labeled. Any information you...
Sign in to the Xfinity Voice Call Blocking Settings page using your Xfinity ID and password. Enter a telephone number and click Add to block the number; to remove a block, click on the trash icon next to an existing number. Click the checkbox for Block Anonymous Calls to add Anonymous ...
is listed as "incompatible" in XM's system. After a while and from talking to internal tech support & coworkers, you'd piece together what's going on--XM is blocking non-XM-sold IMEIs and/or non-XM suffixed model numbers...