As many of our customers ask us the difference between Jailbreak and Unlock, here is the difference from wikipedia.
iPhone Unlock and Jail Break at Dr. Cell Phone in Dallas, Frisco, Addison & Houston
Jailbreaking is a process that allows iPad, iPhone and iPod Touch users to run third-party unsigned code on their devices by unlocking the operating system and allowing the user root access. Once jailbroken, iPhone users are able to download many extensions and themes previously unavailable through the App Store via unofficial installers such as Cydia. A jailbroken iPad, iPhone or iPod Touch is still able to use the App Store and iTunes.
Jailbreaking is different from SIM unlocking, which, once completed, means that the mobile phone will accept any SIM without restriction on, for example, the country or network operator of origin. Jailbreaking, according to Apple, can void Apple’s warranty on the device,[1] although this is quickly remedied by restoring the device in iTunes.
We have a quick announcement for all the iPhone 3GS users out there. Now iPhone 3GS jailbreak & unlock service is available for all versions of iPhone OS including iOS 4.0.
