REPLACE Android with Kali (Not install it alongside Android)

I have an old Android SCH-S738C i do not use anymore. I want to put kali on it so i can test it out on a mobile platform. I DO NOT want Android to remain on the phone. I want Kali to be the ONLY operating system on the device. Everywhere i look, I see ways to install kali or another linux distro on the device alongside the Android OS. I do not want that. So if anyone has any advice on how to go about doing this, your help would be much appreciated.