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Gevey Ultra S SIM for iPhone 4S

Updated on December 1, 2012
Taking your iPhone 4S to another carrier is not so simple as changing a SIM card due to "locking" of phones to specific carriers.
Taking your iPhone 4S to another carrier is not so simple as changing a SIM card due to "locking" of phones to specific carriers. | Source

Buying a used iPhone comes with certain problems, like the "locking" phenomenon which makes it work only with the original carrier. There are several solutions to this problem, however. You can use an IMEI unlock service, or you can use a product which interposes smart circuitry between your SIM and the phone. R-SIM and Gevey are two products that are used in this regard. Consumer feedback indicates that Gevey products are superior.

Applenberry.com has a product called the Gevey Ultra S Sim for iPhone 4S, which comes in two different models. One model will unlock GSM-enabled phones and another will unlock CDMA phones. The SIM which will unlock the GSM-enabled phones will work on iOS 6.01. For CDMA phones, the Gevey Ultra S model will only work if they are running on iOS 5.0 to 5.1.1. At the moment, if you have a CDMA phone with 6.0 versions of iOs, you are out of luck for unlocking your phone in this manner. Use the IMEI method or revert the phone backwards with your iOS if you plan to use the phone outside of the United States

Below I review some other aspects of installing the Gevey Ultra S SIM for unlocking the iPhone 4S for use with other carriers, and I discuss IMEI alternatives for unlocking the 4S.

Requirements for Unlocking the iPhone 4S with The Gevey Ultra S

CDMA iPhone 4S procedure. If you have a CDMA iPhone 4S, like those linked to the Verizon and Sprint providers in the United States, then you need to buy the GEVEY™ Ultra S for CDMA iPhone 4S. Secondly, you need to have your phone Jailbroken before installation. For jailbreaking, Applenberry suggests downloading and installing the latest software from Absnithe.com. Remember again that you can only do the Jailbreak process on iOS 5.1.1, not with 6.0.1 or later versions at this time. (As mentioned previously, you can restore to an older version of iOS if you wish, making the process possible.)

The Gevey reset SIM is then inserted into the SIM card slot. You select your carrier when the screen pops up and then eject the SIM immediately. You have 10 seconds to complete the ejection, so have the ejection pin ready to remove the SIM holder. If you are slow, then you'll have to do it over again. Additional instructions for installing your carrier SIM and FuriousMod are outlined on the Applenberry site.

GSM iPhone 4S procedure. I can see why people would prefer to buy used AT&T iPhone 4S models, the conversion is so simple. All you do is insert the Gevey Ultra S GSM card, with your carriers SIM in place, and wait for the message to appear that your phone is successfully unlocked. Accept that message and you are in business.

The IMEI numbers can be found under the general settings in the system menu.  Fifteen numbers are submitted to services that unlock the phone (some of the numbers have been erased in this photo).
The IMEI numbers can be found under the general settings in the system menu. Fifteen numbers are submitted to services that unlock the phone (some of the numbers have been erased in this photo). | Source

An Apple IMEI Unlock for the iPhone 4S

Currently, this is the only other alternative, besides downgrading to iOS 5.5.1, for those who have bought a used CDMA phone and who have iOS 6.0 or greater.

As seen in the systems menu in the photo on the right, there is an IMEI number associated with your phone. Several companies specialize in sending unlock requests for specific IMEI numbers to Apple. Once Apple approves these unlock requests, your phone is free to be used with another carrier. However, this works only for those who want to use the phones outside of the U.S.

If you choose to do this, then find a vendor on Ebay who has a good reputation with lots of good feedback. This seems to be the cheapest way to get it done. Currently, the lowest pricing for unlocking CDMA phones from Verizon and Sprint is around $ 90.

Concluding Remarks About Unlocking the iPhone 4S

If you have any choice at all in buying an iPhone 4S, by all means choose an AT&T phone because unlocking it via all means is cheaper and less complicated. I recommend the Gevey Ultra S solution because it is inexpensive ($20 to $30) and it offers portability for those traveling in and out of the country. If you buy a phone from a CDMA carrier, it becomes more difficult and costly to covert it for use with a different carrier, and it can sometimes only be used outside of the U.S. if it is unlocked by IMEI.

For those who have to use their used CDMA phone in the U.S., you can stay with the carrier who marketed the phone, or, if it is running iOS 6.0 or greater, you can Jailbreak and change the operating system back to 5.5.1 to use the Gevey Ultra S CDMA. This is what I would do - it is relatively inexpensive and there are many people who are capable of Jailbreaking and changing the OS backwards. Having the most up-to-date OS is not necessary, you still have 99% of the features you need, despite all the hoopla that comes with each new iOS introduction from Apple.

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