I meant you repartitioned the F5122 so the system has the same size as the one on the F5121 or did you just do this to win userdata space?

What I am clumsily trying to figure is if the F5122 works exactly the same with the official image as the F5121. I have to make my choice between the two and I would prefer to have the dualsim version instead of single sim but I also would like to use some android apps like the sonos one for example.