I'm using latest FPSE versin, phone is i9500. I trying to map buttons for sixaxis controller connected with sixaxis app in Native Gamepad mode (it's enabled in FPSE also). All buttons are detected properly except left analog stick. It behaves like it is not present at all. Notice that in psp emulator app all buttons and analog sticks is mapped properly in native mode, so I think this is some FPSE issue. Also I tried to map buttons in Digital and Analog gamepad modes, same result.