Case
I have a Business Process that does not work on mobile.
In my primary application on site it works OK
Solution
BPM'online application and BPM'online mobile must be set up independently of each other - and this is why your code is not working for the mobile version. You can find more about mobile development on our Academy (https://academy.bpmonline.com/documents/technic-sdkmob/7-12/bpmonline-development-guide).
Regarding Business processes: as for now there is no such functionality - user elements like "auto generated page", "open edit page", "task" do not work in mobile version.