Is Tata Docomo (Mumbai region) sim card works in Iphone 5s?

Today I'm ordered Iphone 5s online but I had heard that Iphone 5s need nano Sim card. So if I'm cut my current Sim and make it nano Sim so it works in my Iphone?

Yes cutting the sim to a nano size should not be problem. But I recommend getting a new nano sim and getting your number ported across to the new sim.

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