Yesterday we told you about the Firefox 4 Beta 5 for Android that was released to the Android Market yesterday morning. Mozilla claims they have not only made it more stable, and more efficient. They also mentioned two things that are a huge part of what browser I use on my Android Phone and that is speed, and size. With each beta release the browser has got a little faster, and the file size once installed has got a little smaller. When it was first released to beta it was slow and huge and not able to transfer to your SD card. Things have changed with the last few updates and Mozilla and Firefox are well on their way to having a great browser for mobile.