So you are looking for a portable, foldable keyboard that connects to multiple devices and has full-size keys? The MoKo Tri-Folding Bluetooth Keyboard has you covered. It has Bluetooth 5.1 and connects to 3 devices. You can switch by pushing the fn BT1/BT2/BT3 buttons. This keyboard has full size keys and 13 shortcut keys.
The MoKo Tri-Foldable Bluetooth Keyboard is compatible with Windows, iOS, Android, Linux, and macOS platforms. It also has a touchpad and numeric key mode.