| > We are increasingly hitting weird blocks on messaging due to being grandfathered in before TCR. AFAIK, being grandfathered in before TCR isn't a thing. The blocking is inconsistent because the enforcement is inconsistent. TCR enforcement (filtering SMS) is done by carriers who choose to use it on their services. Primarily, TCR lists are used by wireless carriers, to filter SMS messages before they reach handsets. Primarily, that carrier is T-Mobile. TCR is mostly a T-Mobile effort and they are it's largest enforcer. I have a T-Mobile number and a VoIP number. I used to have SMS to my VoIP be forwarded to my T-Mobile - until T-Mobile began dropping 100% of those messages. I have a dual SIM phone and SMS are now forwarded to my AT&T number. For now, they're arriving. If that stops, I'll have them forwarded to my Google Voice number. I don't know if AT&T or Verizon currently utilize TCR filtering. They may, somewhat. If not, I'd guess they will but won't fully adopt T-Mobile's model. It should be noted that VoIP providers are a primary competitor to T-Mobile; I am not at all surprised T-Mobile would single them out. It fits with T-Mobile's other anti-competitive practices - like blocking Google voice calls from handsets (ex:mine). |