This is normal. The memory address used by the exploit is not always perfect. Turn on Airplane Mode, close all background apps, and try 5–10 times. It will eventually work.
This jailbreak is semi-untethered. If your device reboots or the battery dies, you must re-open the Phoenix app and tap "Kickstart Jailbreak" to re-enable Cydia. Installer Availability: How To Jailbreak Ios 9.3 5 Without Computer
Are you still running iOS 9.3.5 on your iPhone or iPad and looking for a way to jailbreak it without a computer? You're not alone. Many users prefer to keep their devices free from computer dependence, and we're here to help. In this article, we'll walk you through the process of jailbreaking iOS 9.3.5 without a computer. This is normal
Open the browser (do not use Chrome or Firefox for this step). It will eventually work
I can recommend the needed to optimize your specific setup. Share public link
This essential tweak bypasses the App Store's version check protocol. It forces the App Store to let you download the "last compatible version" of apps for iOS 9, turning an otherwise useless old iPad back into a functional device.