Mips from camera distance

Hi, I am new to unreal engine. I have made a simple level for android game. I have launched my level in real mobile device. The problem is my texture resolution mipmaps. I have all 1k texture with mipmaps category Fromtexturegroup. Here when my level loads it always renders 512 resolution texture. When I go near 1m it renders 1024 resolution texture. Is there any way to increase the distance of mipmaps from camera in unreal engine. Please answer.