On 3 April 1973, Motorola employee Martin Bell made the world’s first mobile phone call. Nearly 50 years on, more than 5 billion people are connected to mobile services – and over half are smartphone users.

But while internet access continues to improve worldwide, developed countries still account for by far the highest shares of smartphone users.

In South Korea 95% of adults own a smartphone, and 5% have a regular mobile phone. By contrast 75% of adults in India don’t have a smartphone, although 40% do have a mobile phone.