Changes

; Windows Mobile: '''[http://blog.pavlov.net/2010/03/22/stopping-development-for-windows-mobile/ Firefox has stopped development for Windows Mobile indefinitely.]''' Thank you to our contributors for their continued support and feedback. Last Version: The last release for Windows Mobile was [http://www.mozilla.org/projects/fennec/1.1a1-wm/releasenotes/ 1.0 alpha 4]. If Microsoft decides to release a native development kit for its future Windows Phone OS, then we will consider developing Fennec on the Windows platform again.

; iPhone: We do not have plans to build an iPhone browser due to constraints with the OS environment and distribution. Firefox depends on its own rendering engine and JavaScript interpreter. The iPhone SDK Agreement prevents us from distributing these components to iPhone users. Browsers on the iPhone must use Apple's own JavaScript engine, or none at all (like Opera Mini, which downloads pre-renders rendered pages on from Opera's servers and does not run any JavaScript code on the iPhone itself).

; Palm PrewebOS: We currently have no plans to develop Firefox for the Palm Pre/WebOS webOS platform, but there is an [http://www.oxymoronical.com/blog/tag/palm unofficial port by Dave Townsend (mossop)].

; Blackberry: Sorry, no plans. Due to its Java-based operating system and the inability to build native C/C++ componentsfor Blackberry apps, Firefox is not compatible available on the Blackberry OS.