There's also the reality that repairs and replacement can be very difficult or impossible. Similarly, my iPhone fundamentally expects me to have access to a highish-speed, lowish-cost internet connection for tons of its functionality, and that still isn't necessarily available in much of Africa. In Zambia last year, in a large second-teir city, my _household_ internet cost about $8/gb, so things like automated backups and downloading software updates isn't especially attractive.