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.

Responsive image

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.

Responsive image

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.