Bharti Airtel will sell its mobile phone towers in Africa to Bharti Infratel for Rs. 15,000 crore. Bharti Infratel will raise funds to finance the deal by selling stakes to private equity funds, and will be 90% owned by Bharti Airtel. The sale comes as Bharti Airtel takes steps to replicate an outsourced tower business model in Africa and address its debt of Rs. 65,000 crore from borrowing and 3G expansion.