I have bought a Kuman screen 3.5" (320 x 480). I want change the screen resolution. But I don't know how to make this change: https://www.amazon.fr/gp/product/B01FX7909Q/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1
I don't what is the resolution I must use: http://elinux.org/RPiconfig