Android is a prevalent smartphone operating system in this age; a lot of tech-freak need no one to introduce them to it. While Brew, on the other hand, is basically an operating system too for phones, but then, it is actually obscure. A major factor that differentiates between Android and Brew is that Android is actually intended to be used for smartphones, tablets, computers while Brew is basically intended for just simple phones.
The brew is produced by Qualcomm, while Android, on the other hand, is produced, or it is from Google, a huge company that has fueled the adaptation of it. There a lot more applications on an android than there are on Brew. The brew is old and relatively obscure, while Android is young. It is very easy to spot, recognize, or identify Android phones while Brews are just on regular phones, and they are no easy to spot.