Foursquare unveiled a new app yesterday designed for feature phones – specifically Nokia’s Series 40 handsets. Feature phones are popular amongst non-tech savvy users looking for a simpler product, as well as abroad in developing markets; indeed, in 2011, feature phones accounted for 70% of mobile phone sales worldwide, and Nokia says it sold 1.5 billion units of these S40 phones. Foursquare is trying to edge into this market by getting its service pre-loaded on new devices when they hit the market in several months – and hopes to make checking in a fact of life for the many people who are just getting used to technology in their lives.