How to unlock iphone 5 for free?

I can factory unlock my iphone but i have to pay for that! Is there any way that i could unlock my iphone for free?

Setting>unlock menu should be there

Jailbreak
1. Tap "Safari" to launch the iPhone Web browser.
2. Navigate to JailbreakMe (see Resources).
3. Swipe the "Slide to Jailbreak" slider to download and install the JailbreakMe software to your iPhone. Unlock
4. Tap "Settings."
5. Tap "Network."
6. Swipe "Enable 3G" to "Off."
7. Return to the home screen and tap "Cydia."
8. Tap "Manage."
9. Tap "Sources."
10. Tap "Edit" and then "Add."
11. Type "repo666.ultrasn0w.com" then tap "Add Source." Tap "Done."
12. Tap the search box at the top of the screen in Cydia and type "ultrasn0w" then tap the application icon.
13. Click "Install" and then "Confirm."

There's no Free software to unlock an iPhone 5. Ultrasn0w will only work on iPhone 4 with a specific baseband. Your best bet is to get a permanent unlock. At least then it will be unlocked for life and you are free to switch networks and upgrade away with out worrying about your unlocks. Its here: http://www.howtoidevice.com/

HI free unlocking service are not available for iphone so better unlock your iphone using some reliable online provider. I will recommend you to visit sites like http://www.mobileunlocksolutions.com/apple-iphone-5/rs1wp9/ here they will unlock all model iphone using remote unlocking service for affordable cost… You first verify that whether they are rendering service for your country and network provider. If yes then pay for it and unlock your iphone 5…

Can't do it for free without jailbreaking your phone and voiding warranty and creating a pain when you want to upgrade iOS.

I'd look at an official factory unlock service like Poga suggested or one you find on google.