So if you are searching for a method how to jailbreak iPhone 4 for free and also make sure that a free jailbreak will be possible in the future, you might want to learn what is an iPhone jailbreak and also what are the advantages.
An iPhone jailbreak is the ability to lunch applications (apps) and use themes and all kind of stuff that is not officially approved by Apple’s App Store. A successful free jailbreak will not slow down your device, be it iPhone 4, iPad or iPod, or use any extra battery power. A jailbreak lets your device be how you want it.
How can you be sure that always can jailbreak for free in the future?
Firstly, don’t update past 4.0.1, the last firmware JailbreakMe supports. Secondly, and arguably most importantly, allow Cydia to “make your life easier”. This will allow you to always restore back to the latest firmware available when you select that option.
You can now easily unlock your iPhone 4 in just 5 minutes without any knowledge and having a great support team for helping you out!
To jailbreak your iPhone 4 or iPod you just need to go to this link: JailbreakMe and click “slide to jailbreak”. That’s it, so simple and free! 
Free Jailbreak iPhone 4: step 1
Free Jailbreak iPhone 4: step 2
Free Jailbreak iPhone 4: step 3
Is this free jailbreak reversible?
Of course! If you ever decide that you want to remove your jailbreak, just connect your iPhone 4 or other device to your computer, sync, and then press Restore in iTunes.
Is jailbreak legal in the US?
Yes. A new DMCA exemption was approved by the Library of Congress, specifically allowing jailbreaking.
The list of compatible devices:
iPod 1G on 3.1.2, iPod 1G on 3.1.3, iPod 2G on 3.1.2, iPod 2G on 3.1.3, iPod 2G on 4.0, iPod 3G on 3.1.2, iPod 3G on 3.1.3, iPod 3G on 4.0, iPad on 3.2, iPad on 3.2.1, iPhone 3G on 3.1.2, iPhone 3G on 3.1.3, iPhone 3G on 4.0, iPhone 3G on 4.0.1, iPhone 3G[S] on 3.1.2, iPhone 3G[S] on 3.1.3, iPhone 3G[S] on 4.0, iPhone 3G[S] on 4.0.1, iPhone 4 on 4.0, iPhone 4 on 4.0.1
i wanna eak my ipod thank you
i would like to jailbreak my iphone
When will be able to jailbreak iPhone 4s
Just hoping this is safe.. xD
I would like to jailbreak my iPhone 4s
Have you tried Absinthe?
http://ifreejailbreak.net/easy-guide-to-jailbreak-iphone-4s-and-ipad-2-for-free-windows-tutorial/
http://ifreejailbreak.net/simple-and-safe-jailbreak-method-for-iphone-4s-and-ipad-2-for-free-mac-tutorial/
thanks for the lovely soft
I hope
I can get jailbreak
How can I jailbreak my iphone4 version 4.2.1
hope this works
How can I jailbreak my iPhone 4S.