The documents discuss the growth of mobile phone usage in Africa and efforts to expand mobile connectivity across the continent. Mobile networks have expanded rapidly in Africa in recent decades, with mobile phone subscriptions growing from 16 million in 2000 to over 700 million currently. However, connectivity remains uneven and infrastructure is lacking in many rural areas. Various organizations and companies are working to address this "mobile problem" in Africa through approaches like developing affordable solar-powered mobile phone chargers to increase energy access in off-grid communities and expanding network coverage through technologies like WiFi hotspots.

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