In this tutorial we will introduce a paid service that can help you install Yalu102 on your iPhone without using any computer, and you won't have to install it every 7 days.
First, you need to purchase iPASTORE from here:
After you activated your account and installed iPASTORE, you can find Yalu on the homepage
Go into the detail, and tap Install on the top right.
After it finish install, open it and tap 'GO'
You are done