You are out of touch. All over the world, people use cell phones. Desktop computers require stable power and space. They also aren’t cheaper than a cheap cellphone.

Even the most destitute people have cellphones these days. If the country is in good enough shape that a person could procure a computer, then cellphones are likely more available and cheaper. In fact, your cellphone is likely the source of your data connection even if you do have a laptop or some other computer in a remote area.