Apple has made iPhone very restricted in terms of customization, but there are ways to bypass these restrictions and install custom themes, "iPhone Hack Toolkit" is a free iPhone jail-breaking software.
*Download iPhone Hack Toolkit Ver1.0 (Download Link at end of the post)
*Connect your iPhone with PC (Ensure you have installed iTunes software on your PC).
*Open iPhone Hack Toolkit Ver1.0 software.
*First “Jailbreak” your iPhone, choose “Import” and insert .pkg file(Download Here)
Unconfirmed reports are coming about fully working unlocked versions of Apple's much hyped iPhone being sold at various stores in HongKong and China for around six times the price of the original unlocked version, these unlocked versions were very much anticipated and many iphone lovers in non-us countries were waiting for hackers/crackers/moders to unlock the phone. These iPhone's are 100% unlocked and can be used with any GSM compatible SIM card, users are also able to make use of fantastic internet surfing capabilities offered by the iPhone using the EDGE network protocol in these unlocked versions.
There is also a iPhone Unlocking tutorial available at - hackint0sh.org , Please keep in mind that the activity mentioned in the below forum post can make your iPhone unusable and void the warranty, the link is provided below for educational and news reasons only.
With tagline "Unlock your SIM, not your phone", SIMable would be the most easiest way to unlock majority cellphones including all version of Apple iPhone, Blackberries, HTC and other latest phones, the process involves modifying your sim-card by punching the special SIMable chip using the provided punch to make the hack work, the whole process is pretty simple and requires less then a minute to complete.
Once punched, the chip slides into your phone with your SIM card tricking the device into believing that you are on the right network, a single one-time investment of approx. $29 will make your SIM work with virtually any locked phone out there.
SIMable Mod-Chip
SIMable SIM Puncher
Final Stacked SIM
Since you are not modifying any phone software or hardware this would be the most feasible option for phone unlocking without voiding your device warranty
ZiPhone is a free and open source utility to hack or jailbreak Apples's iTouch or iPhone, removing all the restrictions imposed by the original firmware, Available in both Windows and Mac flavors, the utility is the fastest and most easy to use method to jailbreak iPhone and iTouch.
Once unlocked you can use your iPhone on any network and install applications of your choice on your device, however keep in mind unlocking your device may void your device warranty.
