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Normally you have to use Windows or Mac software to Jailbreak your iPhone, iPod touch or iPad. You have to download the tool, connect your device to computer using a data cable and run the tool to complete the jailbreak process. This process is somewhat complicated to the beginner. However, users must jailbreak their devices to install the Cydia,
Still there are some methods available to Jailbreak iOS to install the Cydia and other 3rd party apps without using a Windows or Mac computer. These Jailbreak methods are known as "online Jailbreak" or “browser based Jailbreak” methods.
Jailbreak without computer
Jailbreak iOS 9.3.1/9.3.2 with no PC
Fully untethered Jailbreak without a computer
* Jailbreakme tool was the only successful browser based tool of the world until Pangu release the iOS 9 - 9.3.3 online Jailbreak Users could use Jailbreakme tool for up to iOS 4.3.3 iPhone original, iPhone 3G, 4, 4S, iPod 1-5 and iPad 1/2. Apple fixed this Jailbreak method; Still developers couldn't update the tool for latest iOS versions.
* Zerodium security research company announced iOS 9.1 – iOS 9.2 beta browser based jailbreak. However, They didn't release it on time due to unknown reason. It seems to be the team will not release it future also.
Benefits of browser-based tools
Browser-based tools have a super easy process, and no requires any third party software installations such as iTunes download. Even you do not want to disable touch ID / disable "Find my iPhone" or device backup data before the start.
Sometimes PC support jailbreak tools have errors and taking much time to complete the process. Even PC supports jailbreak not available iOS 8.4.1 and 9.2, 9.2.1, 9.3, 9.3.1. Still any Jailbreak process is not supported for iOS 9.3.2. Beta.
Apple always not recommended unofficial modifications and sometimes it would be the reason for unqualified to claim warranty. However, semi jailbreak and TaiG beta not doing any unauthorized modifications to your device. Even you can remove semi jailbreak and TaiG beta jailbreak very quickly without an update to the firmware.
You can remove the Online/Browser based Jailbreak without using a PC or Mac. You don’t want to upgrade or restore your device to remove Online/browser based Jailbreak. You can remove them just deleting apps and reset your device.
There is a no PC Jailbreak alternative method available for the latest iOS versions ( iOS 10. 1, 10.1.1 and 10.2 )
You can install the Cydia and more Jailbreak apps/tweaks with the zJailbreak. You can feel the Jailbreak experience awesome features with the zJailbreak app store according to developer's announcements.
Read more about zJailbreak
Before release zJailbreak without PC method, Semi jailbreak was the most popular way among the iOS users. Semi jailbreak not fully compatible with latest iOS versions. Therefore, latest iOS users should follow zJailbreak without PC method.
Pangu successfully released the online browser based Jailbreak for iOS 9.2, 9.2.1, 9.3, 9.3.1, 9.3.2, 9.3.3 and 9.3.4.
In this method, you have to Jailbreak your device partially without using a computer. You can only run the Cydia demonstration on your partial Jailbroken device. Then You can upgrade your partial Jailbreak device to full jailbreak using Semi Jailbreak app manager to install the Original Cydia.
Pangu+PP without PC Jailbreak iOS 9.2 - 9.3.3
This method no longer available at this time and Apple fix this method from iOS 9.3.4 upgrade. But still iOS 9.2 - 9.3.3 users can jailbreak with PC support. Visit iOS 9.3.3 jailbreak page from PC to complete the process.
zJailbreak is the most popular without PC jailbreak method at this time. Currently, zJailbreak supports iOS 10.3 to iOS 10.2. zJailbreak is partial jailbreak method. Full untethered jailbreak also available for iOS 10.2 version. Therefore you should use Windows or Mac. Raad more about iOS 10.2 PC jailbreak.
iOS 9.3.4 is the latest iOS version of the Apple. Apple just released it to fix the Pangu latest Jailbreak. Online or Computer jailbreak method is not available for iOS 9.3.4
You can use two methods for Jailbreak iOS 9 - 9.3.3 without using a PC. Visit iOS 9.3.3 Jailbreak page to complete this process. Browser based method will be available soon for iOS 9.3.4 jailbreak. Please note both of these methods are partial Jailbreak methods. Still, You couldn't do fully Untethered Jailbreak for latest iOS versions without using a PC. However, You can upgrade to these partial jailbreaks to Semi-tethered jailbreak and install fully functional Cydia for your iOS 9.2 - 9.3.3 device
This is the most popular partial jailbreak methods of the world. About 6 million users have already Jailbroken their devices using this online browser based jailbreak method. You can install the Cydia and some 3rd party app stores using Semi Jailbreak. No need a computer to do Semi Jailbreak your device.
Semi jailbreak and zJailbreak compatible
zJailbreak supports both 64-bit and 32-bit running iOS 10.3 to iOS 10.2 versions.
Semi jailbreak tool supports both 64-bit and 32-bit running iOS 10.1 to iOS 8.4.1 versions.
jailbreak iOS 10.2 without a computer
At this time iOS 10.2 running users can jailbreak with PC and without PC methods. Without PC method is the easiest way to jailbreak iOS 10.2 version.
Read the step guide from here
How to jailbreak iOS 10.2 without computer
You no longer need to use Cydia Impactor or Apple developer account for this process.
install following IPA to your iOS device.
Now go to Settings > General and Profile and device management and tap trust for Yalu102 app
Go back to device homescreen and tap Yalu102 app
Let alone Yalu102 to complete iOS 10.2 jailbreak