https://doc.e.foundation/devices https://doc.e.foundation/devices/i9300/install

The e foundation creates open source, privacy-enabled smartphone operating systems https://e.foundation/. /e/OS is a complete, fully “deGoogled”, mobile ecosystem.

There is no google play store. it uses the https://microg.org/ project that includes an app store with the most popular android apps. The is a built in function to request adding apps into the store.

It is a fork from LinageOS and might have better support for particular old phones https://doc.e.foundation/devices

The installation as for a Samsung i9300 follows the same procedure using TWPR and Heimdall seehttps://doc.e.foundation/devices/i9300/install