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How to jailbreak and unlock your iPhone

Now that it's legal to use your phone on any compatible network and with your choice of software, one question remains: How the heck do you do it?

By Stacy Johnson Jul 27, 2010 8:49AM

This post comes from Dan Schointuch at partner site Money Talks News.

 

Thanks to a set of rules issued by the Librarian of Congress (.pdf file) you can now jailbreak and unlock your cellular phone without violating copyright law -- good news for anyone with an iPhone and a distaste for AT&T.

 

Put simply, jailbreaking and unlocking allow you to use your phone on any compatible network while installing whatever software you'd like.

 

If you're like me, your immediate reaction was total elation -- I can ditch AT&T!!! -- followed quickly by the mounting dread of knowing that every person you have ever come into contact with is about to ask you how to jailbreak a phone. Not good. So, in an effort to get ahead of the oncoming swarm of help-me's, here is everything you need to know to jailbreak and unlock your iPhone.

 

First the risks

While it may no longer be against copyright law to jailbreak and unlock your phone, it's still not something Apple is likely to support. It will probably void your warranty, and it may violate your Wireless Service Agreement. This means that you'll have to pony up the $200 out-of-warranty repair fee Apple charges should anything ever go wrong with your phone. And/or your cell service can be canceled by AT&T.

 

Other drawbacks:

  • You'll have to redo the jailbreak/unlock every time you upgrade your iPhone's operating system.
  • The software you install after jailbreaking may drain your battery faster than you're used to.
  • Your phone may be more susceptible to viruses.
  • There's a slight possibility that you'll "brick" your phone in the process (breaking the software on your phone to a point where it cannot be recovered, essentially leaving you with an expensive brick).

Now the rewards

If you're still interested, there's a lot to be gained by jailbreaking and unlocking your phone. Namely, freedom. Post continues after video:

Want to use your iPhone as a wireless hot spot to connect to the Web from anywhere? You need to jailbreak. Want to change app icons on your home screen? Jailbreak. Want to hide the "Notes" app you never use? Unlock your phone for a different cell provider? Sync wirelessly with your computer? All these things, and more, can be done once you jailbreak your phone.
Find your version

A plethora of tools and tutorials will walk you through the process of jailbreaking and unlocking your iPhone. Depending on which model you have (2G, 3G, 3GS or 4) and which version of the phone's operating system you have installed, you'll need to follow a different set of instructions.

 

To figure out which operating system is running on your iPhone, open the "Settings" app, go to "General," then "About," and look for the number next to "Version." You may also need to know your baseband version, which will be on the same screen next to "Modem Firmware."

Jailbreaking

Let's start with the first step in the process, jailbreaking your iPhone. Jailbreaking allows you to install any compatible software on your phone, whether or not it has been reviewed by Apple, and it's required before you can unlock your iPhone to run on a cell service other than AT&T.

 

I've found several guides around the Web that will walk you through the process for your specific device. Follow the appropriate guide exactly, after you have read it thoroughly and understand every step of the process. It's very easy to miss something and end up at a step where nothing works like it's supposed to.

Note: I have not tried these tutorials, but all have been used successfully by other people. I have picked them because they seem like good instruction sets. If you decide to jailbreak/unlock your phone, do not hold me responsible if you end up with an out-of-warranty broken phone. It's a possibility. You've been warned.

Current iPhone and iOS versions:

Older iPhone and iPhone OS versions:

After successfully jailbreaking your iPhone, you'll see a new app on your home screen called Cydia. Think of Cydia as the unofficial app store. For instructions on how to use it, as well as a walk-through of some its features, read "How to Use Cydia: A Walkthrough."

 

Unlocking

When you purchase an iPhone in the U.S., it is "locked" to AT&T's network, preventing you from using it with another compatible carrier like T-Mobile despite the fact that it will function perfectly (with the exception of visual voice mail) on the competing service. But in other countries, like France, consumers have been able to purchase unlocked iPhones for several years. Why lock phones in the U.S.? Profit, pure and simple. If AT&T is the only network the iPhone will function on, then it's the only network that can make any money from it.

 

AT&T would argue that it subsidizes the purchase of the phone and so should be entitled to your business until that subsidy has been repaid. But what about after your two-year contract ends or if you paid full price for your iPhone? You might have thought you were free to switch to another provider, but Apple has argued in court that doing so without its permission constitutes copyright infringement (.pdf file). So your only choice was to keep your service with AT&T -- implying you actually have a de facto lifetime contract with them without ever agreeing to one -- or buy a new phone. 

 

Fortunately, this particular anticompetitive practice is now a thing of the past.

 

Unfortunately, while the iPhone Dev Team, a group of hackers unaffiliated with Apple, has successfully demonstrated a carrier unlock on the newly released iPhone 4, it's not yet something you can get your hands on. Only the iPhone 3G and older 3GS phones can be unlocked today. But if you have one of those phones, after jailbreaking, unlocking is fairly easy. You'll need to install a program called ultrasn0w through the Cydia app. Here's a step-by-step with pictures that will walk you through the process.

 

For updates on when ultrasn0w will be available for the iPhone 4 and newer iPhone 3GS phones, follow @ultrasn0w or @iphone_dev on Twitter, or check this blog post.

 

Switching SIM cards

Once you've unlocked your iPhone, you should be able to use any valid GSM SIM card to get service. A SIM card, or Subscriber Identity Module, is a removable card used by the various cellular networks to identify and authenticate your phone. They come in three sizes (the largest is the size of a credit card; the smallest is actually called a "micro-SIM"). The idea is, as long as your new phone uses the same size as the old one, you can simply move your SIM card from one phone to the other to transfer your service.

 

You can purchase SIM cards by themselves, either prepaid or as part of a monthly plan. Here's a list of GSM providers in the U.S., the biggest of which are AT&T, T-Mobile and TracFone Wireless. You should be able to obtain a new SIM card and cell service from any of them. Most likely, you'll want to transfer your existing phone number to the new SIM card as well, so your best bet is to do this in person at a store after you've unlocked your phone.

 

To replace the SIM card in your phone, follow these instructions from Apple to remove your old SIM card with a paper clip, then just pop in the new one, turn your phone on and voila! You can now make and receive calls on your unlocked iPhone through whichever GSM network you prefer.

Note: The iPhone is capable of operating only on GSM radio frequencies. This means that the iPhone won't work on a competing CDMA network like Sprint or Verizon without the radio hardware inside the phone being replaced, something that cannot be done at home.

Questions?

Of course, you might have questions. This is a fairly complicated process and may or may not be possible on your iPhone, depending on its model, operating system and baseband version. I'll be watching for questions posted in the comments and will try to answer as many as I can. And if you have any success with one of the above methods, I'd like to know that, too.

 

More from Money Talks News and MSN Money:

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