Suggest reading this article first : Jailbreak 9.3 Complete Guide

 

Apple Remove This App Certificate, However the app owners are working on a new certifitcate .

Read : Final Jailbreak iOS 9.3.3 Using Pangu Jailbreak [English] with Cydia Impactor

 

Steps to follow : 

 

1- From your your idevice visit this website : jailbreakme9.com

2- Tap on "Download now" . If it doesn't work, click here for the computer method.

3- Trust the app, from your idevice go to  Settings > General > Device Management. then trust the app.

Trust PP App Steps

Launch the PP app and ACCEPT NOTIFICATIONS

PP Pangu App Notifications

Next, tap on the circle in the app, and then it will turn into a line of text.

PP Pangu app tap on circle

while your device is locked, a notifcation will appear on your locked screen, open it and wait for your device to reboot.

Cydia Installing Push Notification

 

Enjoy Jailbreak :) 

Cydia App Icon iOS 9.3.3