Mozilla has decided that when it comes to Android devices, performance is more important than the wealth of add-ons that can be used to customize Firefox.

Yesterday, Mozilla Director of Firefox Engineering Johnathan Nightingale announced on a mailing list that Firefox will move to Android's native user interface, ditching the XUL technology that's been in use by Mozilla since before there even was a Firefox.

"Firefox on Android is a critical part of supporting the open Web, and this decision puts us in a position to build the best Firefox possible," Nightingale said.

Firefox is widely used on personal computers but a rarity on mobile phones, where--unlike Apple's Safari or the unbranded browser Google builds for Android--it's not installed on any phones by default. Firefox is the chief way Mozilla tries to implement its vision of empowering users of the Web and keeping that Web an open technology.

Firefox with a native Android interface should mean faster start-up, less memory usage, and smoother zooming and panning, Nightingale said. The native UI project page for mobile Firefox, aka Fennec, also listed better battery life as a benefit.

It's not clear when the rebuilt version will arrive, but it won't be for either the beta or Aurora versions currently in testing, Nightingale said.