How to 'Brick' an iPhone 5 for warranty purposes?

I have an iPhone 5 with a special warranty that if it breaks I can have any phone of equal value of what I originally paid for the phone. I want the Samsung Galaxy 4 so I need to brick my phone or break it somehow (without physical damage) to trade it in. It doesn't have to be a permanent bricking just so the sales rep sees it won't turn on

Added (1). The phone has iOs 6.1.4

Depends, what firmware is your iphone running? If it is running iOS 6-6.1.2 jailbreak it with evasi0n (evasi0n.com) and update it to 6.1.4.boom. Your iphone will be a brick, it can be easily fixed with a restore but they probably won't bother fixing it…

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