If I buy iphOne from Australia can it be used in india?

Do I have to get it unlocked in australua

It would depend on your phone plan…
If you have a world-wide phone plan it would work, if you don't, it won't…

Hope this helps.

HI yes you have to unlock your iphone first from Australian network provider only then you can freely use it in India with any of their GSM sim… You can easily unlock your iphone with the help of online providers like http://www.classicunlocking.com/apple-iphone/rs16wp9/ here they unlock your iphone using remote unlocking service for affordable cost…

Yes you can use it but you will have to pay some money in unlocking the device.
As it needs to unlock phone before use in other country

Yes, you can easily use the iPhone in India which you have bought it from Australia only after unlocking it.