: These expand to "sandwich" a smartphone, effectively turning it into a handheld console like a Steam Deck or Nintendo Switch. Examples include the Backbone One and GameSir G8 Galileo .
Academic and industrial research highlights several benefits and challenges: Mobile Gamepad
: Provides universal compatibility across various devices but may introduce slight latency. : These expand to "sandwich" a smartphone, effectively
: Competitive mobile controllers can reach polling rates of up to 1,000 Hz , significantly faster than standard wireless console controllers (typically ~124 Hz), reducing input lag. Connectivity : reducing input lag. Connectivity :