What Apple does to simplify things (prioritize simplicity and accessibility, obsessively remove or hide options, make reasonable defaults, broaden the happy-path) can be replicated on more affordable platforms.
That said, I've struggled to teach my elderly mother how to even answer her iPhone -- she finds it overly complicated. If she could get over the technical hurdle, she could stay in better touch with remote family and friends who now prefer texting and video calls to snail mail and begin to alleviate her loneliness.
Even in poor areas, lots of people are walking around with iPhones. $200-500 gadgets are not out of the range of poor people. That works out to less than a dollar a day.
One time amortized expenses aren't that much of a barrier, from what I've seen. The real barriers the poor face are things like high rents, high medical cost, high cost of education, etc.
[1] https://www.worldbank.org/en/news/press-release/2018/10/17/n...