I am contributing to an Open Source Project where I am developing Material design for React Native. I am blocked at work,I am unable to make some UI level enhancements w.r.t
It is the pixel ratio that you have to consider. pixel represents an absolute value. pixel ratio is a relative value. to make app screen and components responsive you have to use pixel ratio.
i have been using in multiple apps already. and i think that is how you have to do it. hope this answers your question.