I've been using S3 ([i9300](https://wiki.lineageos.org/devices/i9300)) with the release date as May 2012 along with lineageos for almost 10 years. This guide is for HTC One ([M8](https://wiki.lineageos.org/devices/m8)) though, but the process is _nearly_ the same for your model as well. Both devices are still one of the most popular used models according to [stats.lineageos](https://stats.lineageos.org), m8's release date is March 2014, check if your phone is supported [here](https://wiki.lineageos.org/devices), check "Show discontinued devices" if you're okay to run the outdated version.
If you're still having trouble finding your phone, then you can also search the [XDA Developers Forum](https://www.xda-developers.com/) for an "Unofficial" lineageos build that a community member is maintaining. I have been able to support many phones well past their years with the consistent monthly security patching by other community members. Also, the XDA Developers Forum has been around since 2002 and is a trusted source for mobile phone development.
The [wiki](https://wiki.lineageos.org/devices/m8) page is more than enough but it's better to have everything in one place rather than following a lot of external links.
- Once you have installed everything successfully, run `adb reboot`.
# Install F-Droid & SilentDragonAndroid
> F-Droid is an installable catalogue of FOSS (Free and Open Source Software) applications for the Android platform. The client makes it easy to browse, install, and keep track of updates on your device.
- To install SDA please follow this [link](https://git.hush.is/jahway603/sda-fdroid/raw/branch/master/fdroid/repo?fingerprint=A0C4BB434AAE5CF89D59D79A20625B8FC4ED03FE3C27093C7FCB68567DA2FB0C) from [git.hush.is/jahway603/sda-fdroid](https://git.hush.is/jahway603/sda-fdroid) on your device and open it with F-Droid.
# Install InviZible Pro
> InviZible Pro includes the well known modules DNSCrypt, Tor and Purple I2P. These modules are used to achieve maximum security, privacy and ease of use of the Internet. This application will also work without root, so it should work on all Android devices.
Lineage's/default browser may feel not comfortable to use, one option is to install Firefox for Android or Fennec by searching it on F-Droid.
# Install Bromite Chromium browser
> Bromite is a Chromium fork with ad blocking and privacy enhancements; take back your browser!
The main goal is to provide a no-clutter browsing experience without privacy-invasive features and with the addition of a fast ad-blocking engine.
Minimal UI changes are applied to help curbing the idea of “browser as an advertisement platform”.
All patches are published under GNU/GPL v3 to enable other open source projects’ usage.
For users who prefer that Chromium flavor of browser, I suggest you check out the Bromite browser by adding the [3rd party FDroid repo](https://www.bromite.org/fdroid) which the developers of it maintain and update.