Review on 💡 GameSir T4 Pro Wireless Game Controller: Dual Shock USB Bluetooth Mobile Phone Gamepad Joystick for Windows 7 8 10 PC/iOS/Android/Switch and Apple Arcade MFi Games with Semi-Transparent LED Backlight. by Shawn Martin

Update, this review refers to the wireless version without bluetooth. Remember that many of these reviews marked as "Product purchased: t4pro" reflect the experience of using the original "Gamesir T4 Wireless" and not the Bluetooth-equipped "Gamesir T4 Pro": I recommend using it with Android devices do not. notes that the controller can work in 2 wireless modes that are not described in the manual. Modes are switched by pressing the home button. In one undocumented mode, mode LEDs 2 and 3 are lit. In the other undocumented mode, no mode LEDs are lit. X input mode is indicated by lit mode 1 and 4 LEDs. When the USB dongle is connected to my Shield, it goes into a mode that is not described in the manual. The mode LEDs are off. The result is a non-intuitive key mapping. It does not switch modes when connected to a Shield device. Tested on Mecool M8S Plus W (Android Mobile OS). Works best with an undocumented mode that lights mode LEDs 2 and 3. Xinput mode (LEDs 1 and 4) is not recognized. The input mode (LEDs 1 and 3) is recognized, but has a strange key binding. With mode 2 and 3 LEDs lit, the button mapping is intuitive, but the home button doesn't take me back to the home screen, it doesn't do anything. Retroarch can confirm in two modes (LEDs 1+3, LEDs 2+3) but cannot identify the Gamesir device in either mode. The Gamesir device does not go into undocumented mode, which is the default on my Shield device. Strange.