Sparkle, a mobile-first digital bank that provides financial, lifestyle and business support services to Nigerians across the globe, has raised an oversubscribed seed round of $3.1 million (N1.3 billion) from an all-Nigerian group of investors including Leadway Assurance, Trium Networks and a number of Nigerian high-net-worth individuals. This follows a previous friends and family pre-seed round totalling $2 million (N857 million), bringing Sparkle’s total funding to $5.1 million (N2.1 bill...