I've heard it's common in India for people to get a mobile phone contract that gives them the Facebook app and Wikipedia but not universal web access. I would

I've heard it's common in India for people to get a mobile phone contract that gives them the Facebook app and Wikipedia but not universal web access. I would guess that there are a lot of people in the UK who use Facebook from a smartphone but for various reasons (old phone, poor eyesight, dementia, ...) can't in practice access a web site. OK, I admit the article is about "Americans", but some of the comments refer to other countries! Anyway, it would be good to know more precisely what Internet services people can and do use, rather than just "use the internet" with no definition given. For example, how many people use e-mail? How many people have an Android or iOS phone? (How many of those are able to install an app? Some can't because the phone belongs to an employer ...)