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

It may be that your device does not have the processing power to play Brave Frontier at max capabilities.

To fix this, go into Menu from the main screen and go into Settings. Turn the graphics to low, turn off the Battle Effects, turn off the Background effects, and put the item display down to 0. It also helps if you turn the volume off in this screen, but that does not help as much as the rest.

If doing this does not help, it may be that your device is too outdated to play this game or that there is a device-specific bug to your device.

Hope this helps!