It’s crazy that anyone can force a full-screen interrupt on my personal device with no context. If call metadata included a subject line, software could automatically screen out calls where the subject is empty or spammy, just like with email.
It would be very helpful for missed calls. “Why did my wife call twice in the last 5 minutes, did something happen, should I panic?!” It also removes the need to leave rambling voicemail.
The subject line takes only 15 seconds to write but will significantly reduce receiver anxiety, both synchronously and asynchronously. Sending a text after the call is not the same because it’s not in context.
I remember proposing this to WhatsApp while I was working at FB but the WhatsApp culture seemed uninterested in feature ideas of any kind. Hopefully someone else does it eventually.