You can install Unc0ver Jailbreak following this simple guide
Step 01 - Launch Mobile Safari.
Step 02 - Find this page as the following image.
Step 03 - Tap the download button to download Unc0ver directly to your device.
Step 04 - Open the unc0ver app from your device homescreen and tap Jailbreak button to jailbreak your device.
Step 05 - Wait until Jailbreak Complete. Your device will restart at least twice during the process.
Step 06 - Once exploitation finished, Cydia will be installed on your device.
Enjoy! your iOS device is now jailbroken! You can Install the desired tweaks and jailbreak packages.