The launch of updated iOS 5.1 firmware motivates iPhone users all over the world to update their iOS, but if you are interested in using jailbroken and unlocked phones, then you should wait for iPhone 4 unlock with 5.1 firmware to be made available. The existing unlocking methods have baseband limitations which means that you won’t be able to unlock iPhone 4 if you don’t have unsupported baseband. Downgrading baseband is not an option anymore if you don’t have SHSH blobs for older versions. Apple has stopped signing older baseband versions and so, if you have lost your baseband by mistake, then there is no way to recover it. So, before upgrading iOS to 5.1, you should carefully watch out for updates in the jailbreaking scene and this is the biggest hurdle for anyone trying to use free jailbreak and unlock.
How hardware iPhone 4 unlock is different from software based unlock?
Software based unlock for iPhone 4 unlocking is provided by Ultrasn0w, but only specific basebands are supported. The basebands supported by Ultrasn0w include 01.59.00, 04.26.08, 05.11.07, 05.13.01, 05.12.01 and 06.15.00. For those who don’t have supported basebands, it is advised to upgrade to iPad baseband, but you should be prepared to lose some features with it. Due to these limitations of free iPhone 4 unlocking, hardware based iPhone unlocking methods became popular.
Hardware based unlock iPhone 4S methods involve SIM unlocking kits. You need to purchase these kits and use the hardware based SIM replacement chip that should be inserted in the SIM card slot. Instead of directly inserting the SIM card in your locked iPhone 4S, you should place the new SIM card in the upgraded hardware before inserting the entire arrangement into your iPhone. In some cases, you even have to dial emergency numbers to enable hardware iPhone 4S unlocking processes.
The hardware iPhone 4 unlock methods are expensive and just like software based Jailbreak iPhone 4 methods, they are also limited by supported basebands. The Gevey SIM unlocking method was popular even though it was expensive mainly because it made unlocking iPhone 4 devices easier. Those who didn’t want to jailbreak their iPhones used hardware process to unlock it. Again, Gevey SIM proved to be ineffective for basebands greater than 04.10.01. The iOS 5.1 firmware comes with baseband 02.0.10 which can’t be unlocked by Gevey SIM and Ultrasn0w.
iPhone 4 unlock with RSIM III
A new hardware based iPhone 4 unlock is launched by Rebel SIM called R-SIM III which can supposedly show users how to unlock iPhone 4 and 4S on 2.0.10 baseband. Those who have accidentally upgraded their iOS firmware to 5.1 will benefit from this hardware based unlock because the new baseband is now supported by this unlocking method. As long as you are ready to buy this expensive kit and risk your iPhone by inserting hardware modification, you can go ahead with R-SIM III as many people claim that it works after jailbreaking your iPhone 4 and 4S phone’s first.
- Step 1: Purchase R-SIM III kit.
- Step 2: Open the SIM card tray in your iPhone using a jump clip.
- Step 3: Insert the SIM card base in the hardware provided along with R-SIM III kit.
- Step 4: Place your SIM card in the available space in the assembled hardware kit.
- Step 5: Insert the SIM tray along with the hardware arrangement in your iPhone.
- Step 6: Navigate to SIM settings and choose the SIM provider.
- Step 7: You should now be able to use the new SIM card with your hardware unlocked iPhone 4.
The hardware based iPhone 4 unlocking methods are not recommended by experts because they are not very safe to use. Moreover, making calls to emergency numbers is not a good idea and it is considered illegal in several countries. When you use hardware iPhone 3GS unlock, then you should find a way to activate your iPhone using supported carrier before using the new SIM card. These hassle can be eliminated with software based unlocking, but you should find reliable and working untethered free jailbreak and unlock iPhone 4 tools.
Safe and easy iPhone 4 unlock using computer based software
Expert hacking teams such as iPhone Dev Team and Chronic Dev Team suggest iPhone users to use only software based jailbreaking and unlocking as the limitations imposed by Apple are most software based. As there are exploits available in the iOS operating system, there is really no need for you to tamper with the hardware. With the hardware iPhone 4G unlock kits, there is no guarantee that no damage will be caused to your phone.
Not all software based iPhone 3G unlock solutions work and so, you have to spend time in finding the right one. We have made it easy for you as we have spent several hours trying and testing different jailbreak and unlock tools for iPhone unlock code. We highly recommend computer based software for iPhone 4 unlock as this software provides untethered iPhone 4 jailbreak and complete unlock irrespective of the firmware version and baseband version you have on your device. This is why many iPhone 4 and 4S users are looking for reliable instructions to unlock their iPhone 4. Using reliable software to unlock 5.1.1 iOS firmware is what you need to look for when choosing a solution for the process. That is why we recommend only the best software for unlocking iPhone 4/4S devices, visit today at: How To Unlock iPhone 4 Devices


This quick guide for unlocking iPhone 4S is assuming you have downloaded a real and working iPhone 4S unlocking tool, such as the one suggested from this website.





In most cases, you find that in order to unlock iPhone 4 basebands, you have to jailbreak your iPhone. However, with the Rebel SIM card, this doesn’t have to be the case no matter which iOS4 and above version you are using, and it kind of offers you with a shortcut.
The answer to this question of how to unlock and jailbreak iphone 4 is not as straight-forward as it may seem. The actual process itself than an iPhone 4 owner would go through is rather easy. But the technical side of a jailbreak and unlock iphone 4 can be very challenging. That is why it is ideal to find the best software for an iphone 4 jailbreak and unlock. Finding the best jailbreak unlock iphone 4 tool is not that straightforward unfortunately because too many people are trying to unlock iphone 4 for free and ending up on bad jailbreak websites that try to make you download virus and spyware programs to your iphone and pc. This is something that we hear about from iphone 4 users who have had a bad experience trying to unlock their iphone 4 device. This also leads to the question of whether you can unlock iphone 4 without jailbreaking. If it were possible to do an iphone 4 unlock without jailbreak then we would be the first to tell you that. But that simply isn’t the case. There is no possible way to unlock iphone 4 without first jailbreaking it. That’s because the jailbreak process is what sets up the possibility to unlock iphone 4. Jailbreaking an iphone will free the sim card of its restrictions and allow an iphone user to perform an untethered jailbreak with ultrasn0w unlock or similar jailbreak apps. The unlock tool’s alone cannot get access to the latest iphone firmware which is needed to get access to the actual iphone sim card in order to unlock it. That is why the Jailbreak and Unlock iPhone 4 processes go hand in hand.