Though installing Custom ROM on Android device is so fun we might get situation where we try to attain one thing and sacrifice other. From the above I mean that most of the people install Custom ROM’s to speed up their device or to get beautiful look on their device or to get better animations etc. in the process to acquire those features they sacrifice battery life. If they install ROM which gives better battery life then they have to sacrifice animations and looks etc. So in this guide I have brought both Custom ROM and Custom Kernel for you which gives you both the speed and the better battery life.
The ROM which we are going to use is Quantum ROM and the Kernel which we are going to flash is Quantum Kernel. They both are compatible with each other and provided better animations, speed, Battery Life etc. so if you decided to flash this ROM on your device then let proceed further and install Quantum 5 and Quantum Kernel 7/3 on AT&T Samsung Galaxy S3 SGH-I747.
Before we proceed to install Quantum 5 and Quantum Kernel 7/3 on AT&T Samsung Galaxy S3 SGH-I747, we must follow the below listed pre requisites to prepare install AT&T Samsung Galaxy S3 SGH-I747 for the installation process and also to avoid it from bricking.