The phone is called Ustad Mobile (Mobile Teacher) and provides national curriculum courses in both national languages, Dari and Pashto, as well as mathematics.

All the lessons are audio-video, with writing, pronunciation and phrases installed in Ustad Mobile phones -- and they are distributed free to students.

Sat on a carpet in a small Kabul classroom with a handful of women learning to read and write, 18-year-old Muzhgan Nazari said the Taliban, who banned schooling for girls during their rule, were in power when she should have started her education.

“I could not go to school because the Taliban took control of Kabul city,” she said, adding that her father had also opposed his daughters attending school.

“Since I heard about this literacy training centre for women, I convinced my father and he allowed me to attend on a daily basis,” she said.

Nazari is delighted with the programme, which is being rolled out by a commercial provider and the ministry of education with financial backing from the United States.

The Mobile Teacher software was developed by Paiwastoon, an Afghan IT company, with $80,000 in US aid and is designed to tackle one of the worst illiteracy rates in the world by riding the growing wave of mobile phone use.

Despite millions of girls now attending school, Afghanistan's literacy rate among women remains at just 12.5 per cent, compared to 39.3 per cent for Afghan men, according to United Nations figures.

“This is the first time audio-visual literacy learners have the chance to receive lessons on their cellphones,” Mike Dawson, CEO of Paiwastoon, said.

The company has experience in the field, having previously managed the 'One Laptop Per Child' programme that handed out 3,000 computers to women and children in Kabul, Kandahar, Herat, Baghlan and Jalalabad.

“We can make the job of the teachers easier by using the video and the audio and the questions and exercises,” Dawson said.

“Cellphones are cheaper than any computer and people are familiar with it. And also, the maintenance is much easier.”