how to check software version in android ?

how to check software version in smart phone deal this code and you check your smart phone
software version it so easy.
sumsung  smart phone only this code use
sumsung mobile android check software version use this code only for sumsung
phones

how to check sumsung android phone software version
how to check sumsung smart phone software version
how to check software version on smart phone
how to check sumsung smart phone?
how to check android software version check ?