[Nullabillity]

> But I might start the practice of texting ahead of calling someone unfamiliar with a quick message like “This is John Smith's phone. I'll be calling shortly.” That way, I would ensure that my call was picked up or at least given the priority they prefer.

Hitta.se (https://play.google.com/store/apps/details?id=se.hitta.andro...) will automatically look up the caller's name in the (equivalent of the) yellow pages.

I assume there's an equivalent in most other countries?

[reitanqild]

Actually interesting:

Around here we have a number of forward/reverse lookup services (I use 1881.no) but I have a hard time finding anything similar for other countries. Right now I am trying to look up what I believe is a Californian number but where do I find a usable phone registry for US?