Mobile default AntiAliasingMetho 0: off (no anti-aliasing 1: FXAA (default, faster than TemporalAA but much more shimmering for non static cases 2: TemporalAA(it will fallback to FXAA if SupportsGen4TAA is disabled) 3: MSAA
Usage
r.Mobile.AntiAliasing [value]
Set via the console (~) or in DefaultEngine.ini / DefaultGame.ini.