Hello iGp community and team.
I'm pretty much sure that this has been suggested quite a lot of time until now, but I'm still going to try.
As of right now there is no secret for anyone that there are 2 boost buttons for 2 pilot leagues on tablets and in web version of the game and only one boost button in the mobile app which puts mobile players in a kind of an unfair position. Especially when we talk about high level/skill demanding leagues and races like Italy where double boosting is absolutely essential.
So my suggestion and maybe even more like a kind request is to add the second driver boost button to mobile app or a button to activate boost on both cars. That would even up the odds a lot, so mobile would be just the same competitive in "double boost races" as tablets and PCs.