The Nokia C5-03 is clinging onto the past with all its might. Nokia has just teamed-up with Microsoft to pump out its own Windows Phone handsets, but the Nokia S5-03 is stuck with the Symbian operating system. It's not the Symbian^3 OS released in October 2010 alongside the Nokia N8 either - this is Symbian S60 version 5, used in the Nokia N97 way back in the prehistoric age of 2009.