I agree there are benefits as well. But regarding the quality, I have a 4K mobile screen (Sony Xperia Z5 Premium). For others, full HD is practically the norm f

I agree there are benefits as well. But regarding the quality, I have a 4K mobile screen (Sony Xperia Z5 Premium). For others, full HD is practically the norm for higher end phones now. 480p is noticeably worse in some applications, e.g. screencasting.