S60 (Series 60) is a UI (user interface) developed by Nokia for Symbian systems.
S60 is not a mobile phone system, but a graphical user interface for users based on Symbian systems!
S60 is capable of running native third-party S60 applications as well as regular Java applications.
Introduction of S60 interface: As the user interface with the largest shipment of Symbian smartphones, Series 60 has been sought after and loved by manufacturers and users. The manufacturer has invested a lot of money to develop the Series 60. Series 60 has been in three versions since its birth and has multiple PARKs.