Hi, All, I am Kamil Patel From Pakistan, I have Some Bigger And Graetest News For All iPhones Lovers Who have iPhone 4 With(below supported ios complete list) Ios 6.1.3,7.0,7.0.4,7.0.6 or Latest Ios 7.1 with Baseband(Modemfirmware) 04.12.02,04.12.05 or 04.12.09 and its locked coz many networks Factopry unlocking not Supported and if supported so many expensive thatís why more peoples like me use iPhone 4 like iPod but now Its Unlocking solutionm Perfect and low cost Available for all countries. First Of all I wanna Special Thanks to Superior Solutions who Provide That Solution with verry simply hading, Its Name Superior Sim Ultra+ its Just Like a GEVEY Sim, Its Verry Good working with all networks in my case I have iPhone 4 with IOS 7.1 BlackBerry 04.12.09 so I write below full guide how its work before working I wanna share some basic thinks here, where is available, whats guarantee and how to work so below I write all proofs with video guide that helps may iPhones Lovers in worldwide.
Supported ios: IOS 5.0,5.0.1,5.1,5.1.2,5.1.3,6.0,6.1.0,6.1,6.1.1,6.1.2,6.1.3,7.0,7.0.1,7.0.2,7.0.3,7.0.4,7.0.6 & Latest IOS 7.1 also They Provide An Updater with this Updater you can preserve baseband and go to any coming new IOS like IOS 8.
Supported Basebands(Modemfirmware): 04.12.01,04.12.02,04.12.05 & 04.12.09 also Old versions Like 04.11.08 and others also supported.
Prepration for use Superios Sim Ultra+ ( Unlock Sim Interposer).
You Have must iPhone4 and there ios and baseband must match above list.
There guide are 2 types 1 for who have activated iphones or jailbreaked and one for no activated iphones like iCloud locked. This sim Auto Activated and Unlocked. In My Case I have Activated iPhone4 Locked from AT&T USA network.
iN first step simply Restart your iPhone4 Witout Any sim ( Also Reset Network Setting)
After restart insert Your =Network sim with Superior Sim Ultra+ Sin Interposer.
Wait 5 seconds till searching coming in Network bar.
Now simply Goto setting> and on airplane Mod the Off this do 2 or 3 times and now wait show in network bar first searching then Invalid and then voila come full signals now your iPhone Unlocked & use with all featureslike Factory unlocking iPhone also with This Your iPhone4 Warranty Has Stable.
Note: Some iPhone that non activate its guide different like after 2nd step wait for come popup then accept the choose imsi or enter your network imsi no you can find verry easlythere website. Or there help desk skype:IPHONE5DEVELOPER or Direct Call +1 (818-794-9842).
Below Links where I upload full video guide how its work with my iPhone Please watch for More Details.Also pictures liks are below:

See More: how to Unlock iPhone4 With IOS 7.1 and Baseband 04.12.09 and older full review here