Comment by ozim
8 hours ago
I get the comfort that "normal person" would send an SMS "it was me Greg, call me back" if you don't pick up and most of my family is on whatsapp anyway.
Scammers or spammers will never send an SMS with clarification that they wanted to call you.
But a normal person could be calling from a doctor's office, a hospital, or your child's school - and not an actual cellphone, and they may not want to text you (or not be allowed to text you) from their personal cellphone, either.
As a parent, the "block all numbers!" approach has always seemed incredibly naive to me.
Doctors' offices, hospitals, and schools are well aware of this problem because they're dealing with both the outgoing and incoming elements of it. Many hospitals no longer permit direct calls to inpatient rooms because of the spam and fraud rates. Outbound communications are similarly frustrated, and are driving use of online and app-based contact methods (with ... their own issues).
Other organisations, institutions, and businesses too. HN discussion tends to focus on the consumer side of this, it's what most commenters have most familiarity with themselves, but you'd better believe that pretty much the entire phone customer base is fed up to there on this. Which puts the entire network at risk of defection, a risk that telcos have been talking publicly about for over a decade now:
[S]ince mid-2015, a consortium of engineers from phone carriers and others in the telecom industry have worked on a way to [stop call-spoofing], worried that spam phone calls could eventually endanger the whole system. “We’re getting to the point where nobody trusts the phone network,” says Jim McEachern, principal technologist at the Alliance for Telecommunications Industry Solutions (ATIS.) “When they stop trusting the phone network, they stop using it.”
<https://mastodon.social/@BroadbandBreakfast/1169990755811584...>.
Those will usually leave a voice mail if it's important. Then you can call the place back and discuss it. If they don't bother to leave a voice mail, then it's not urgent / important.
Same as GP. I silence unknown callers, and unknown text messages. They can leave a voicemail, and I might check it at some point. I check unknown texts a little more often, but they don't interrupt me with an alert which is the important thing.
No police/fire/hospital emergency outcome is going to hinge upon someone else answering a phone call or text messsage.