A number of hardware iPhone unlock dongles have started flooding the market. We have already seen TPSIM, R-SIM, Gevey Ultra S announcing their iPhone 4S unlock and the latest one to join them is GPP SIM. But unlike all other doohickeys, GPP SIM is a one-step plug-and-play solution that allows you to unlock iPhone (on iOS 5.0, iOS 5.0.1) by inserting their custom designed third party SIM card.
In order to remove carrier restriction, you don’t require to jailbreak your iPhone 4S, and thus keeping your phone warranty intact. All is required is just insert the GPP SIM card. The method is safest to use as it doesn’t require dialing 112 emergency number. There is no need to unlock again after losing signal or after switching your phone to airplane mode. GPP SIM iPhone unlock provides stable EDGE and 3G communication; 2G/3G dynamic switching and even supports MMS (multimedia message).
GPP SIM enables 3rd party mobile operator network SIM cards to be used on any AT&T locked iPhone 4S (on iOS 5.0, 5.0.1). This means an AT&T locked iPhone 4S can be used with the T-Mobile network in the United States as well as any other GSM operator in the world. GPP SIM also works well on Japan KDDI and Softbank iPhone. The video above shows how GPP SIM unlocks AT&T USA (5.0.1 on 1.0.14), Japan KDDI (5.0.1 on 1.0.14) and Softbank iPhone (5.0 on 1.0.11).
How to use GPP SIM Card
Turn off your iPhone 4S and place your SIM card along with your GPP SIM together into the unlocking tray provided. Turn on your iPhone 4S and your phone will be unlocked and ready to use. The iPhone 4S tray is designed to support micro sims. If your sim is not the proper size, you will need to trim it to fit in the iPhone 4S tray. This can either be done by scissors or a microsim cutter. Please be careful not to cut off the SIM contact points.
GPP SIM Unlock Supported Devices
- AT&T iPhone 4S on ALL GSM Network in the world
- Support firmware versions including iOS 5.0 and 5.0.1
- Unlocks baseband 1.0.11, 1.0.13 & 1.0.14
GPPTeam.net, has a proven track record providing legitimate unlock solutions since 2008 for iPhone and, iPhone 3G. You can check out some of the historical videos demonstrating unlock of the original iPhone with similar technology.
For those who are interested in GPP SIM, the product can be ordered here at a cost of $64.99. The company is shipping the unlock SIM for free fromCalifornia,USA. However, we would advice iPhone users to buy only after getting positive reviews about GPP SIM unlock.