network specification

[Pururathi]

Please solve my problem.

I am usung A 30 mobile.

While searching manual network, list shows only network carrier avaliable not network like 4G/3G /2G of service providers.

How can I come to know how many type of network available for choose. 

Please solve this problem as soon as possible. 

[Pururathi]

dear Samsung
did you got solution to my problem.