How to Unlock an iPhone?

 What is unlocking?

Unlocking is the removal of SIM restrictions on the modem, allowing the use of the iPhone on any carrier. The main reason to unlock your iPhone is if you want to use it with a different service provider (ie. T-Mobile).

If you still not sure you may refer what we worted on our 3uTools website:

What's the Difference Between Jailbreaking and Unlocking?

There are two ways to unlock an iPhone. You can either do a software unlock, which usually requires some kind of hacking, or you can do a factory unlock.

Official Factory Unlock for iPhone

The difference between a locked iPhone and an officially unlocked one relies on the addition of the device's IMEI number to a database of officially unlocked iPhones. The IMEI is like a fingerprint, completely unique to your device. When officially unlocked, your IMEI is officially recognized in Apple's database as unlocked. There are now a few providers that have the ability to get iPhones permanently unlocked for a small fee.

To our knowledge, this is currently the best way to permanently unlock an iPhone, especially since there is no software unlocks available for the latest iOS versions.

The main benefits of a permanent IMEI unlock are:

1. it's simple, and official (registered as officially unlocked in Apple's database)
2. it works with any iPhone, even on-contract (iPhone 2G, 3G, 3GS, 4, 4S, 5, 5s, iPhone 6 and iPhone 6 Plus)
3. it's 100% guaranteed to unlock your iPhone
4. the iPhone can't be locked again, even if you update your device in iTunes
5. it does not void your iPhone warranty
6. no jailbreak or hacking required

Software Unlock

This page is a reference guide for anyone looking to unlock the iPhone using software. Simply look for your firmware version and your iPhone model on 3uTools website- firmware section, then find the appropriate tutorial. Note that at this time, software unlocks only work with older iPhone models that haven't been updated to the latest software. If you're looking for a reliable, permanent unlock, we can only recommend you do a factory unlock of your device (see details above).

Software unlocks used to be available for older iPhones all the way to iPhone 4. Devices that have been released after the iPhone 4 cannot benefit from a software unlock.

More tweaks you can visit 3uTools Blogger ;more iPhone tips, you can visit 3uTools.

Unlock iPhone 6.1

• Unlock with UltraSn0w 1.2.8

Unlock iPhone 5.0.1

• Unlock iPhone with UltraSn0w

Unlock iPhone iOS 5

• Unlock iPhone with UltraSn0w

Unlock iPhone iOS 4.3.3

• Unlock iPhone with UltraSn0w

Unlock iPhone iOS 4.3.2

• Unlock iPhone with UltraSn0w

Unlock iPhone iOS 4.3.1

• Unlock iPhone 4 4.3.1 with UltraSn0w
• Unlock iPhone 3GS 4.3.1 with UltraSn0w

Unlock iPhone iOS 4.2.1

• Unlock iPhone 4.2.1 with UltraSn0w

Unlock iPhone iOS 4.1

• Go from iOS 4/4.0.1 to iOS 4.1 while preserving the baseband to unlock iPhone 4, 3GS, and 3G

Unlock iPhone iOS 4.0.2

• no unlock for iPhone 4 4.0.2 yet
• no unlock for iPhone 3GS 4.0.2 yet
• unlock iPhone 3G 4.0.2 with UltraSn0w

Unlock iPhone iOS 4.0.1

• iPhone 4 unlock with UltraSn0w
• iPhone 3GS unlock with UltraSn0w
• iPhone 3G unlock with UltraSn0w

Unlock iPhone iOS 4

• Unlock iPhone 3GS iOS 4 with RedSn0w
• Unlock iPhone 3G iOS 4 with RedSn0w

Unlock iPhone 3.1.3

• Unlock iPhone 3GS 3.1.3 with UltraSn0w
• Unlock iPhone 3GS 3.1.3 baseband 05.11.07 with BlackSn0w
• Unlock iPhone 3G 3.1.3 with UltraSn0w
• Unlock iPhone 3G 3.1.3 baseband 05.11.07 with BlackSn0w
• Unlock iPhone 2G 3.1.3 with RedSn0w

Unlock iPhone 3.1.2

• How to unlock iPhone 3GS 3.1.2
• Unlock iPhone 3GS 3.1.2 with BlackSn0w tutorial
• How to unlock iPhone 3G 3.1.2
• Unlock iPhone 3G 3.1.2 with BlackSn0w tutorial
• Unlock iPhone 2G 3.1.2 with PwnageTool

Unlock iPhone 3.1

• iPhone 3GS 3.1 unlock with UltraSn0w
• iPhone 3G 3.1 unlock with UltraSn0w
• iPhone 2G 3.1 unlock with PwnageTool for Mac OS X

Unlocking iPhone 3.0.1

• Unlock iPhone 3GS 3.0.1 with UltraSn0w
• Unlock iPhone 3G 3.0.1 with UltraSn0w
• RedSn0w iPhone 2G 3.0.1 unlocking tutorial for Windows and Mac

Unlocking iPhone 3.0

• Unlock iPhone 3GS 3.0 using UltraSn0w (recommended)
• PurpleSn0w unlock for iPhone 3GS 3.0
• Unlock your iPhone 3GS 3.0 using PurpleRa1n and UltraSn0w
• Unlocking the iPhone 3G 3.0 with UltraSn0w
• PwnageTool unlock tutorial for iPhone 2G 3.0 on Mac
• RedSn0w unlocking tutorial for iPhone 2G 3.0 on Windows and Mac