[capableweb]

SMS spam can be solved on the operator level instead of forcing devices/software to protect against it. Just because your country has poor telecom operators doesn't mean that applies to the rest of the world. My main phone number is a western Europe number that is added to all my outgoing emails + visible on my public website (and lots of other places) and I almost never receive spam SMSes. Last one was pretty much exactly one year ago.

[preisschild]

Funfact: The only spam I got was by my phone operator (Magenta / T-Mobile Austria, the same guys that save passwords in plaintext). Never by someone else though, but im wary where I publish the number.

[Gigachad]

The less the network operator does, the better imo. Just let them be dumb data types. Apple and Google will always be vastly superior at keeping out spam.