Currently the majority of students in developing countries, and especially Sub-Saharan Africa, do not have access to WiFi. As a result most students cannot download study notes or past papers, and cannot look things up on the internet if they are confused. This problem is exacerbated by the fact that many schools cannot afford printers, let alone cover the cost of printing study material for students. Few schools have enough textbooks to give each student a copy.
The good news is most students have access to a smartphone and most cellphone networks allow use of WhatsApp and Facebook Messenger at reduced rates. This means WhatsApp and Messenger Chatbots can help solve these problems.