Online parts vendor Apple N Berry is offering a permanent unlock solution for AT&T iPhones. According to the product page, the AT&T iPhone IMEI Unlock allows your iPhone 3G, 3GS, 4, and 4S to stay permanently unlocked even after an iOS upgrade or SIM card swap.
Unlike SIM interposers, the AT&T iPhone IMEI Unlock requires no extra software, jailbreak or hardware to unlock your iPhone. All Apple N Berry requires is that it's an AT&T handset for it to work. The AT&T iPhone IMEI Unlock is $150 and requires 1 to 2 business days to be activated. The unlock comes with a money back guarantee, however, there has been no confirmation outside of Apple N Berry that this solution works.
While iOS 5.1.1 may have thrown jailbreakers a curveball, unlockers using the GEVEY Ultra S GSM with their GSM iPhone 4S will be happy to know it's safe to upgrade. According to online retailer ApplenBerry's Twitter feed, the GEVEY Ultra S GSM is compatible with iOS 5.1.1.
CDMA iPhone 4S or 4 models need to be jailbroken to use the Ultra 5.1 SIM interposer. There is no jailbreak for iOS 5.1.1 currently, but the GEVEY Ultra S does support iOS 4.1 and later (through 5.1). iPhone owners should not update to iOS 5.1.1 if they would like to keep their devices jailbroken.
If you're using the SAM package to unlock your iPhone, it's a good idea to backup your activation ticket to keep future unlocking options open. There are several ways you can back up the activation ticket, but thanks to a new Cydia package called Cookie the process is easier than ever.
1. Open Cydia and install Cookie. This can be found under Sections -> Utilities or by using the Search function.
2. Run Cookie and tap the Backup Activation button.
There's another unlocking option for GSM iPhone 4 owners looking to use their device on multiple carriers. The latest GEVEY Ultra 5.1 SIM interposer makes this possible without jailbreaking or violating your Apple warranty. Compatible with iOS 4.1 and later (through 5.1), the product supports modem firmware versions 1.59, 2.10, 3.10.1, 4.10.1, 4.11.08, and 4.12.01.
Of course, those with a jailbroken iPhone 4 can also use the GEVEY Ultra 5.1 to unlock their devices. More options are becoming available for unlocking including the SAM package method and even official unlocking of out-of-contract iPhones on the AT&T network.
Now jailbroken iPhones can be unlocked for use on other carriers using the SAM (Subscriber Artificial Module) package. The process works with the GSM iPhone 4 and 4S running iOS 5 and equipped with any baseband. This means that users looking to unlock their devices for use on a different carrier don't have to wait until they're out of contract.
The unlock comes thanks to Chinese iPhone developer Loktar_Sun. The SAM package can be installed by first adding the source repo.bingner.com to Cydia on a jailbroken iPhone. For instructions on how to add a repository to Cydia click here.
In case you haven't heard, AT&T started officially unlocking out-of-contract iPhones for customers in good standing earlier this month. The only problem is that AT&T recommends a full restore at the end of the unlocking process, which will wipe an existing iPhone jailbreak.
Luckily you can still unlock your iPhone through official channels without losing your jailbreak by following a few extra steps. When your contract with AT&T ends and you're ready to unlock your iPhone for use with other carriers, first follow the steps at this link to contact AT&T and determine your eligibility.
A few hardware unlock solutions for the iPhone 4S have appeared this month, but Gevey has released a Verizon and Sprint unlocking solution. The Gevey Ultra S claims to unlock both GSM and CDMA, unlike the R-SIM and TP-SIM which do not work with Sprint models.
The new SIM interposer requires that your iPhone be jailbroken, not be running iOS 5.1 or higher and is on one of the following basebands: 1.0.11, 1.0.13, 1.0.14. This is also the only known solution for Sprint handsets. The Gevey Ultra S is $60 and will be available at the end of this month.
Looking to unlock your iPhone 4S for use on other carriers? Now that unlocking fans are still waiting for a jailbreak software solution, familiar unlocking service CutYourSim has reappeared on the scene. In case you don't remember, CutYourSim had a brief business remotely unlocking iPhones for a price.
The company ended up refunding money and closed up shop after their "supplier" couldn't meet demand for its services. CutYourSim is now offering a permanent unlock solution within 15-20 days for AT&T customers for a cool $200.
Another hardware unlock solution has appeared, the R-SIM from Each Supplier. This SIM interposer works with the iPhone 4S running iOS 5 or iOS 5.0.1 making it possible to use the device on any compatible GSM carrier network.
iPhone Dev-Team has not made recent announcements regarding updates to ultrasn0w, the software unlock solution for jailbreakers. One advantage of the R-SIM is that the product does not require a jailbroken iPhone to unlock the device.
T-Mobile doesn't offer the iPhone, but that hasn't stopped iPhone users from using T-Mobile. It's estimated that around one million T-Mobile customers use unlocked iPhones to access the carrier's slower EDGE network. The iPhone is incompatible with the 1700/2100 MHz bands used by T-Mobile for its faster data speeds, but a recent refarming of its spectrum capacity has caused some pockets of the country to be iPhone-accessible.
According to TMONews, a very few unlocked iPhone users are picking up 3G signals in parts of Northern California and the Pacific Northwest:
"Nevada, parts of Northern California and the Pacific Northwest are also seeing some pockets of 1900MHz spectrum refarming for HSPA+. There are other parts of the country T-Mobile can refarm the 1900MHz spectrum but, the focus is on the Pacific Northwest, Nevada, Utah and California for right now from what we’re told. We should emphasize and emphasize greatly that this post does not mean that all of the aforementioned areas are seeing this refarmed spectrum, just pockets inside those areas."