Lolo Borrego

Hello! Brand new user here to the NanoPi Neo and even the forum. I'm planning to use a NanoPi Neo as hardware "interactor", the main idea is to connect a NanoPi Neo to a smartphone (Android or iOS), power the board from the USB cable and work in Host Mode to interact with de smartphone with libimobiledevice or adb. OTG does not support charging + data at the same time without a "special" OTG adapter. What I want to do is power the NanoPi by using the smartphone and even interact with it in host mode, like a regular computer will do, in simple terms, using a single cable, but getting power from it. Is this possible using NanoPi microUSB+OTG port? Can this be archieved in "gadget mode"? (Tutorial) I'm new to this OTG, USB dual-role thing and I can't fully understand it. Do I need a hardware mod? Is the only way to archieve this feature to usea an adapter with external power-in ?? Very many thanks for your help.