“During our transition to Windows Phone through 2012, we continued to ship devices based on Symbian. The Nokia 808 PureView, a device which showcases our imaging capabilities and which came to market in mid-2012, was the last Symbian device from Nokia.”
This was the statement given by Nokia in the Q4 Earnings call. Also in the past year Nokia sold 2.2 million Symbian devices, half as the Lumia series with 4.4 million, In total it was less than 14% of the total 15.9 million phones.
Symbian started its life somewhere in 1998, and was the biggest mobile platform until 2011, when Android took the crown.