[Icoca card for subway]

Well noted..thanks alot

[Icoca card for subway]

I'm going to japan in march for the first time n planning to buy icoca card.

Can i buy icoca card in namba subway station since im gonna stay near this subway station?

My niece is 3 yrs old, does she need icoca card too?

In osaka. Can i use icoca card for subway line (eg midosuji, tanimachi, chuo, senichimae etc)?

I read that i can use icoca card in kyoto too, but can i use icoca card for all transportation in all area around kyoto?

Best regard