Firefox OS is an operating system designed by Mozilla for smartphones. We had reported some custom ROMs and some devices running on Firefox OS.
Thanks to Mozilla developer Fabrice Desré, you can now try the Firefox OS experience without flashing a ROM or removing Android by installing B2GDroid.
Just set the B2GDroid as your default launcher and you will see an almost full Firefox OS experience, including: launcher, notification drawer, lock screen and settings. It doesn’t completely replace your ROM, but if you were considering buying a phone with Firefox OS or making the switch this is a good way to find out what to expect.
The app does include some of the Firefox OS apps, which are the apps you’d find included with the complete OS such as messaging, contacts, calendar, and its app store. Unfortunately some elements such as the notification drawer tend to conflict with Android’s own and at the these times you will likely be booted back to your old launcher whilst Firefox compiles an error report.
When I installed this on my Moto G I found that the notification was not properly incorporated to Firefox OS, so the Android notification was there.
As Firefox OS is running as a launcher and the concept is similar to run an emulator, hence you will find performance was little bit poor. I am very much satisfied with the emulation because it still looks in the early stage. Most of the times I was back in to Android launcher when I was trying to open an application. This is just to see how Firefox OS works and this is not at all for day to day use.