From Mumbai, sending a cell phone through courier is hell. Many of the courier companies told me that you've to declare it as something that has no value. But however if it's caught, it will be confiscated. For this also they quoted me prices such as 1.5k - 2k. Many of them just plainly refused to take them. However, anybody staying in Blore or Pune I can send it through somebody. Alternatively, I can send it to Pune or Blore & get it couriered from there to any other place. Courier companies should accept cell phones from Pune & Blore to be sent anywhere in Mumbai.
Regarding the warranty....I don't think a sim card has ever been inserted in this. Phone has just been lying around & bill is available. But I'm not sure how Samsung warranty works since I've never bought 1. This is phone belongs to my neighbor who is a very close friend of mine. She got 2 pieces from Flipkart.