What can I say? Thanks again 
Ooh, shiny!
I want to generate .apk file without obb file. Is it possible in Ue 4.20? and if possible what will be the lowest size of the application or a simple blank project? because after reading all the documentation and set up my engine to that I got the .apk have 31MB and also a Obb file 18MB approx of my blank example project. Please help me to make a low size game even if for a blank project. Thank you in advance.