After recently acquiring an unlocked iPhone 4 in the UK I have now left the ranks of "tied-in" iPhone users - at least that's what I thought.
I had intended to keep my iPhone 3G and use it as a backup phone, both in the UK and in Switzerland. This would mean that the phone needed unlocking so that I could swap SIMs. No problem, I thought: Just ask those nice people at Swisscom if they can unlock it! After all, I've had it over two years and have certainly paid back the subsidised price difference by now!
No chance. Once a Swisscom iPhone, always a Swisscom iPhone. I could pay somebody in London to unlock it for me but they only knew how to unlock an iPhone with OS version 3.1.3 ... I'd already updated to 4.0.1 and am not going backwards for anybody!
Enter JailbreakMe.com 2.0 and some quick surfing!
The process was easy and quick. To save you from surfing around for the answers though, here's how it's done:
(Note for the geeks amongst you: This may be old news for you. I didn't write this for you though, but for everybody else who may feel a little nervous about playing around with the innards of their iPhones!)
(Important note for everybody: remember that this is, while no longer illegal, something that those nice people at Apple don't like and something that will void your warranty - if there's any warranty left on your old iPhone 3G/3Gs)
Step 0. Make a backup of the iPhone with iTunes.
Step 1. Visit JailbreakMe.com with the device you want to unlock. If you visit from a laptop you'll only see the default server setup page.
Step 2. You'll see a welcome screen with a "slide to jailbreak" slider:

Step 3. This is exciting! Go for it. Slide the slider and you'll see that you then download "Cydia" onto your iPhone. Cydia is used to Jailbreak your iPhone - allowing you to install other software not authorised by Apple and not supported. Once Cydia is installed, start it. Choose the option "Let Cydia make my life easier" to ensure that you pull updates in the future and you're sorted.
Step 4. Your iPhone is now Jailbroken - meaning that you can install other software through Cydia.
I'm not too interested in the majority of the Apps that are featured in the Cydia repositories - except for one: Click the "Search" icon, go to the search box in Cydia and search for Ultrasn0w (that's a zero, not an "O"). Links I found on the internet mentioned version 0.93. I installed the latest version, 1.1-1, which states that it also unlocks iPhone 4!
Step 5. Install Ultrasn0w and allow your iPhone to reboot.
Step 6. There is no 6. It's done!
Here're two screenshots from my previously-Swisscom-locked iPhone 3G, just after rebooting (with an Orange pay-as-you-go SIM):
Remember not to update your iPhone iOS version past 4.0.1 with iTunes unless you've checked out the availability of a Jailbreak and Ultrasn0w for the new version - otherwise your phone may be locked to your original provider again.
That said, those 5 minutes of time saved me the cost of getting the phone unlocked by somebody in the UK for around £30-£40. maybe I should have kept this quiet and charged you all? ;-)
Big thanks to comex and everybody behind JailbreakMe.com and to the iPhone Dev Team for Ultrasn0w. No thanks whatsoever to Swisscom for stating that they never unlock phones, even after a contract qualifies for renewal.
Disclaimer: Of course, this is messing around with your iPhone's iOS and may cause your phone to be messed up. Make a backup first with iTunes. If all goes belly-up, simply restore your iPhone with iTunes and restore the backup.










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