iOS 11.3.1 jailbreak
* Anzhuang
Developer code extraction method
Most popular way to install jailbreak apps for iOS 11.3.1 version. Also, you can use this method to install Cydia (Jailbreak app manager)
* Velonzy
UDID registration method
Velonzy makes you as a virtual Apple app developer by UDID registration. You can install any app after became an Apple developer.
* Yalong Jailbreak
Untethered Jailbreak
Yalong Untethered Jailbreak tool supports iOS 11.3.1 jailbreak. Initially only for iPhone 5s device. Sideload Yalong IPA with Cydia Impactor and jailbreak your iOS 11.3.1
* Apricot
Virtual Jailbreak
World first web OS for iPhone devices. Apricot is the mirror version of iOS 11.3.1. Install Apricot on iOS 11.3.1 and install jailbreak apps.
For more visit: http://pangu8.com/jailbreak/11.3.1/