Unlock iPhone 4
You can unlock your iPhone 4 using a number of different methods, including free methods. To find out how to unlock your iPhone 4 yourself for free, take a look at the guide below first, you will need to know what firmware you’re running first as some basebands cannot be unlocked. Jailbreaking and unlocking your iPhone can also cause issues as well as voiding your warranty.
If you’d rather not unlock your iPhone yourself, there are a number of options available the first is to speak to your current network provider. They make be able to help you unlock your iPhone via iTunes – this normally takes around 48 hours but can depend on your network.
Another option is to use a third party unlocking provider, who will unlock your phone for you for a small fee. To find which providers unlock the iPhone 4, select your current network from the dropdown below and you will be presented with a list of providers, times and costs to unlock your phone. You can find out the iPhone unlocking process an unlocking company will usually take here.
If you use one of the providers listed don’t forget to leave them a rating and review as this helps others in the future.
Unlock the iPhone 4 yourself for free
If you have an iPhone 4 it is pretty easy to unlock for free. It involves a process known as jailbreaking (opening up the software on your phone) and then running some additional software to perform the actual unlock.
The first thing to do is to check that there is an available unlock for the version of iOS and baseband (modem firmware) that you are using, or that there is a downgrade to a supported baseband. To check your iOS version and baseband, go to Settings > General > About on your iPhone.
At the time of writing the latest version of iOS with an available untethered jailbreak and unlock is 5.1.1 (using ultrasn0w 1.2.7) providing you are on one of the following baseband
iPhone 4: 01.59.00
iPhone 3G(S): 04.26.08, 05.11.07, 05.13.04, 05.12.01, 06.15.00*
Once ultrasn0w 1.2.8 is released, a jailbreak and unlock will be available on iOS 6.x on the same basebands listed above. Check the iPhone Dev Blog for updates.
Redsn0w is available from the iPhone Dev Blog
Ultrasn0w is available on Cydia by adding to the list of sources.
* Baseband 06.15.00 is an iPad baseband, and disables the GPS receiver. If you have already updated to 06.15.00 to unlock, there is a baseband downgrade available using redsn0w (0.9.15b1). If you are going to downgrade, you must make sure that you have a compatible model iPhone 3G(s), as newer models have a fixed baseband. Follow the instructions on redsn0w very carefully
*Please note prices to unlock may vary according to which network you’re currently with.
How to unlock iPhone 4
Choose the current mobile network that your handset is locked to; so we can help you choose the best way to unlock your handset based on price, service rating and time.
* The times listed for networks are based on their maximum stated figures.