Nokia applications and devices are the most used before developing
the smartphone application.Most popular operating systems in Nokia are
Symbian,Mego etc…This Os were avoid from 2014 january onwards after that there
is no application in the Nokia store of these type os.No more modifications and
updation of these applications will not possible for the developers.
While ios
and android were developed Nokia changed its os to windows.After the decision
of Nokia about handling the devices and services to Microsoft,Nokia fixed a
three months validity to developers for changing the applications in the Nokia
store.