Airtel: Airtel Africa is a subsidiary of Indian telecommunications company Airtel, that operates in 17 countries across Africa. It operates a GSM network in all countries, providing 2G or 3G or 4G depending upon the country of operation. GSM-900 MHz (GPRS, EDGE),2100 MHz UMTS, HSDPA.
Cable & Wireless:Cable & Wireless Worldwide PLC (informally Cable & Wireless) was a British multinational telecommunications services company headquartered in Bracknell, United Kingdom. It was formed in 2010 by the split of Cable & Wireless plc into two companies, the other being Cable & Wireless Communications.Cable & Wireless Worldwide specialized in servicing large corporates, governments, carriers and resellers and its services included managed voice,data and IP based services. It had operations in Asia Pacific, Europe, India, the Middle East & Africa and North America. The company was bought by Vodafone in July 2012 and integrated into the business on 1 April 2013.GSM-900 MHz.