Problem with mobile

When i use the editor and game view my game looks great however when I build my game into an apk and play it on mobile the graphics on my panel objects look all blocky and pixelated.
How can I fix this?

I had the same issue. I fixed it by setting anti-aliasing in the quality settings, setting filter to bilinear in the PNG import settings and having PNG dimensions the exact size I needed them to be in my UI. This made the images slightly blurry upon zoom as compared to the hard, jagged edges I had before, but no more pixelation. Hope this helps!