How to set android antialias and light resolution

Hi,
The attachment image shows IES lights in UE4 RealistcRendering sample, on pc the quality is very good, but when I run on android PAD(SAMSUNG Galaxy Note 10.1 2014 Edition P600, I think the hardware is not too bad) it look very bad.
I want to know where can I set android antialias and light resolution?
Thanks

BUMP,
So many days passed, no answer…

Hi alonezhby

i have the same problem did you figured it out ?

THX2000

No, Maybe you can report it as a bug, epic will response it…

I have the same problem and know this is nearly a year later. Has there been any update or fix to this? Running 4.10.4.