Zain South Sudan is a mobile communications and information technology services provider operating in South Sudan. It is a subsidiary of the Zain Group, a multinational telecommunications corporation that has a presence in eight Middle Eastern and North African countries. Zain South Sudan is the second-largest telecommunications network company in South Sudan, maintaining a significant customer base in the country.
The company was formed as a result of the 2005 Naivasha Agreement between the Khartoum central government and the Sudan People's Liberation Army/Movement (SPLA/M). Following a referendum in 2011, which led to Southern Sudan's secession from Sudan, Zain Sudan had to divide its operations into two separate independent networks. This marked the first time in the history of the global telecom industry that a network had to split its operations. The network separation was completed immediately after South Sudan gained independence, and Zain South Sudan became operational. The company was the first to use the new country code (+211) and introduced new Zain-South Sudan SIM Cards in the newly formed nation.