# Firefox for Mobile Devices

We have several different mobile products aimed at different tasks,
devices, and audiences:

- Building **Firefox for Android** (codename: fenix). Our general-purpose
  mobile browser is split into several different artifact layers:
- [The fenix Android application](/mobile/android/fenix.html)
- {searchfox}`The android-components Android library <mobile/android/android-components>`
- [The GeckoView platform](/mobile/android/geckoview)
- [Firefox for iOS](https://github.com/mozilla-mobile/firefox-ios),
  our general-purpose browser for iOS with desktop sync built-in.
- Building **Firefox Focus**, our privacy-focused browser for
- [iOS](https://github.com/mozilla-mobile/focus-ios)
- {searchfox}`Android <mobile/android/focus-android>`. This browser
  also uses the android-components library and GeckoView platform, like Firefox for Android

For both Desktop and Mobile development, please bear the following in
mind:

- While you can build Firefox on older hardware it can take quite a bit
  of time to compile on slower machines. Having at least 8GB of RAM is
  recommended, and more is always better. The build process is both CPU
  and I/O intensive, so building on a machine with an SSD is also
  strongly preferred.
- Fast broadband internet is strongly recommended as well. Both the
  development environment and the source code repository are quite
  large.
- Though you can build Firefox to run on 32-bit machines, the build
  process for almost all of our products requires a 64-bit OS.