DIY modification for using a phone with case attached.
I use a Rhinoshield Bumper Case for my Galaxy S7, and got tired of having to remove it from the case to fit it in the RC controller when I fly, so I made one small change to the arm of the controller by removing the bottom rubber piece on each arm so there was more clearance on the bottom.
With the bottom rubber removed, my S7 with the bumper case fits perfectly within the arm. Just FYI, the thickness of the case on each end of the phone is around 10mm.. You will need to use a T6 Torx screw driver to remove the screws before pulling out the rubber piece.. I found that I needed to remove all 3 screws and remove both rubber pieces together before re-attaching the upper piece back on the arm.