User blog comment:Bfplayer001/HELP FOR CRASHING ON ASUS ZENFONE 5/@comment-24277289-20150903200331/@comment-24277289-20150904132007

Brave Frontier takes about 1.5 GB from what I remember, and systems rarely actually let you use your entire RAM capacity because of the initially downloaded apps on it, so you are going to be almost at capacity with Brave Frontier. It might help if you don't have any other apps on your phone that are unnecessary.