Many people still confuse when it comes to jailbreak the iPhone. Some fear, some prejudice. But the fact is that it is a way to further improve what is already a great phone, freeing him from the constraints of the factory.

Why jailbreak? He is against the law? It can ruin my phone? I lose the warranty?
It is precisely this that we discuss in this article.
First of all let to the definition:
What is jailbreak?
The word "jailbreak" in a free translation, could be defined as "out of prison." It is the process that releases the iPhone (and iPod touch) the limits imposed by Apple, allowing you to install programs unofficial functions and enable the device blocked.
It is done through the programs developed by communities of hackers who have the freedom as an ideology that everyone has to do what you want with a property you own.
iPhone Dev-Team
. The Dev-Team is the group best known at the time, for being the only one to present a free method to jailbreak (and unlock) for firmware 2. They do not accept donations and are against piracy, hacking always looking to develop that do not contravene the law, taking care not to change any code that is Apple's intellectual property. That's why they develop the tool for custom firmware, but do not distribute the files ready, because that would be illegal. You change a firmware for their own use can, but do not have the right to distribute it to anyone.
It's like you buy a song and change it. You can as it is yours, but distribute it, will hurt the author's copyright. The reasoning is the same.
iPhone Classic
In the beginning, when the iPhone was only sold in the United States, the jailbreak was the only way to residents of other countries to use the phone, which was locked with AT & T. Thousands of people in the world did this, including European Ministers.
Even today, who has an iPhone Classic (the one with the silver and black back) must need to jailbreak to be able to use it because it remains stuck with the original chip carrier. He went on sale in some European countries, but the only country that officially released the old models was France (after 6 months of purchase) due to its legislation.
Cydia and Installer
At first, the iPhone came with only 16 basic applications (and iPod touch with 12). And only.
No third-party applications, the only thing you could do was to access web pages in the format iPhone, which Apple calls "Webapps". She tried to encourage the "web applications" among developers, but it was a cold water bath in the majority who thought they could use as much of the system installed on Unix machine.
This was the first great incentive to jailbreak, unlock the full capabilities of that device, but that was ultralimitado factory. And he was born with the Installer, which installs directly on mobile applications made ​​by third parties. It was the beginning of the revolution.
GeoHot
Impossible to speak of the jailbreak without mentioning the name of George Hotz, the 17 year old hacker who was the first in the world to unlock the iPhone, just over a month after its release. But at the time the process was physical: you had to open your phone and try to solder a tiny point. She was wrong ...
The GeoHot also helped many others find flaws that allowed unlocks the future (including yellowsn0w).
For jailbreak?
Unlock your phone is more a choice than a necessity. Nowadays you can very well live without the jailbreak and if you can, great as it will avoid a lot of headaches with updates firmware and reinstalling applications each time restores. But it should also know that you can not do much beyond the limits imposed by Apple.
Jailbreaking can enable various functions on the device, such as MMS, video recording, multitasking (more than one application running at the same time), copy / paste, use the phone as a modem internet, installation of themes and screens funds, among others. Up to unlimited use of Bluetooth is a imminent promise. Several things that other phones and the iPhone does not allow.
It is a crime to want to use the full power of an appliance you bought?
Jailbreaking voids the warranty?
No, does not cancel, because he definitely does not change anything on your device. Just do a normal restore through iTunes and you have your original factory system. Just can not take the assistance with the jailbreak, because Apple does not allow.
Why Apple does not allow for jailbreak?
For a logical question. Apple prohibits any change in the system because of the iPhone to install things the company can make a beautiful unknown damage to the device. She can not believe that all hackers act in good faith and therefore not responsible for the changes. It's like when you buy a computer: the manual says that if you open it, you lose the warranty because the manufacturer does not know what it was made without official permission. Same thing with the iPhone, if you open it or tamper with the operating system, it is not responsible anymore. Nothing more logical.
Worried about it, the Dev-Team has developed a reliable process that does not change anything definite on the iPhone. If the machine crashes, it will not be the fault of the jailbreak and that is why we just restore the firmware to the guarantee worth again.
I've heard people saying that this is wanting to deceive the technical assistance officer, but the reality is very different: he is not spoiled because of the jailbreak, is not just the warranty expire.
It's how you uninstall an application before you take care.
Of course we are talking about jailbreak reliable. If you ever release your phone in a weird site with a different method of Dev-Team, he can use methods that mess up your machine and then the guarantee, with reason, is invalid. But just being here on the blog that always inform the safest method.
Jailbreak is not synonymous with piracy
Many associate the use of unlocking applications cracked, but this is not always true.
One reason Apple want to prevent the jailbreak is just the fact that he uses unorthodox enable the device, such as the ability to install applications pirates. Now that is illegal because it is an intellectual property theft. The hacker community responsible for unlocking the iPhone is against this practice because it is a lack of respect for the work of small and medium-sized developers, and is against the law.
Find the whole jailbreaking is illegal only because of piracy is an error.
Unlocking the phone
This seems to be a controversial issue among our readers.
The release is another function that allows the jailbreak, allowing the use of a chip carrier different from that sold the device. This is an unnecessary feature in Brazil, as the national carriers officially unlock the iPhone (bought them), just a simple request. But in many countries the device is locked, depending on the agreement that Apple made in each country. In such cases, the customer is stuck with the phone and can not use it while traveling, for example. Many Brazilians living abroad suffer from it.
It also has the case of the owners of the first iPhone model, which require the release in order to use the unit in Brazil. Apple itself no longer cares about that anymore because there is more refreshing the baseband of the Classics.