Many people want to unlock their mobile phones in order to use the alternative SIM cards, usually at the end of the initial contract period or during that time. As you are aware most of the iPhone’s are “locked” to a particular network i.e. iPhone by AT&T in the US and by O2 in UK.
Most of us need to use our phones with different carriers while we are are travelling or sending our mobiles as gift to other countries, but can not use due to its locking to the native carrier. Therefore we need carrier unlock iPhone, by unlocking the iPhone you can be able to place calls with any GSM carrier by inserting different Subscriber Identity Modules (SIMs) into the phone. After iPhone is unlocked you only need to buy any local GSM-compatible SIM and put it in your iphone to make your calls hence avoiding using the iphone with roaming and paying lot for roaming charges.
I have given below the complete list of iPhone’s which are now available in the market. It is suggested to fist ensure that your iphone is unlock-able, before going for any jailbreaking or unlocking process:
You have to first jailbreak your iPhone and then you can install the unlock tool like UltraSn0w. As always instructed make a backup for your device before starting any jailbreak or unlock activity.
Previously I mentioned in my posts to unlock iPhone 4S on 5.1 and 5.0.1 using UltraSn0w 1.2.5 and by using Gevey Ultra SIM but these two iPhone unlocks were not compatible with all basebands. There is one other unlock method for iPhone 4S, the R-SIM, that can unlock iPhone 4S baseband 2.0.10 on iOS 5.1 hassle free. There are many people who has updated iPhone 4S to iOS 5.1 but not able to unlock by any other mean for iPhone 4S carrier unlock, they can use R-SIM III to carrier unlock iPhone 4S.
This iPhone 4S unlock is also compatible with other basebands but only for ios 5.0 and 5.0.1. Other basebands include 1.0.11, 1.0.13, and 1.0.14.
R-SIM III unlock is very easy to implement and any person who does not want to jailbreak or dont have much knowledge about jailbreaking and unlocking, he can easily unlock iPhone 4S by using R-SIM 3.
Other features of R-SIM III are mentioned below:
1. No Need to Dial International Emergency Number 112
R-Sim True Plug-and-Play Unlocking SIM Interposer
Complete Unlock with all 2G and 3G data services
Untethered Unlock with no Jailbreak Required
Compatible with all GSM iPhone 4S SIM Cards
No SIM Card Cutting or Physical Modifications
Works on iOS 5.0, 5.0.1
Works on Baseband 1.0.11, 1.013, 1.0.14
Guaranteed Better Reception than Previous
Decreased Power Consumption
Watch below video for further details and understand how R-SIM 3 works.
You can visit below link for more details, pricing and ordering of R-SIM III Unlock for iPhone 4S.
Below guide will help you on how to unlock an iphone, I was able to unlock my iphone easily within few minutes. After unlock you can use your iphone on any mobile carrier so it is in the state of carrier unlock. You must have to jailbreak your iphone before and you can jailbreak by visiting my Tutorial on How to Jailbreak.
Now I assume that you are having iPhone 4, iPhone 3GS or iPhone 3G that are already jailbroken on iOS 5.0.1, therefore we shall unlock iphone through recently released Ultrasn0w 1.2.5.
Note: T-Mobile USA users have to disable 3G network before starting unlocking iphone Go to Settings >General >Network and switch the “Enable 3G” switch to OFF.
Remember your device should be Jailbroken so that you can use Cydia for unlocking using UltraSn0w 1.2.5, you can visit this article to jailbreak now.
Steps for Unlocking are:
Step 1: Tap Cydia icon to start the application and tap Manage after Cydia loads.
Step 2: Tap Sources
Step 3: Tap the Edit tab as shown in below screen
Step 4: Tap the Add Button
Step 5: Type following URL and Tap Add Source
Download of Cydia source will be done automatically. After the source is successfully added to the Cydia tap return to Cydia button at bottom of the screen and then tap the Done button.
Step 6: Now you will be in the main window of Cydia if not just open it and tap Search at lower right corner (see image at step 3). Now type Ultrans0w in Cydia search box as shown below and tap the ultrasn0w as shown in below screen.
Step 7: After tapping you will see the below screen now tap Install and tap Confirm on next screen. The installation will begin and complete itself.
Step 8: Reboot your device.
Wow. your device is unlocked on iOS 5.0.1 try using the different SIM cards..
If you want to unlock your phone to work with other carriers you need to use Pwnage tool for jailbreaking your idevice that preserves your baseband. This jailbreak is a bit complicated as compared to the other where you don’t care for unlocking. If you don’t want to unlock your phone to work on other phone carriers then you can follow this procedure.
Also you have to note that Pwnage Tool is for mac users only and this jail break works for iPhone 4/3GS, iPod Touch 4G/3G and iPad 1 running on 5.0.1
Following are the steps you need to follow for doing jail break:
Since new untethered jailbreak for iOS 5.0.1 has been released yesterday other related tools and tweaks are also now available, today Dev team has updated PwnageTool 5.0.1 for untethered iOS 5.0.1 jailbreak that allows users to generate custom IPSW while preserving baseband that makes unlocking possible with UltraSn0w or Gevey SIM.