At CES 2020, Razer debuted the Razer Kishi , a universal, dual-sided mobile gaming controller created in partnership with
Razer didn't build this alone. Gamevice holds a notoriously deep patent portfolio regarding "slidable, dual-sided controllers that attach directly to a mobile computing device." Rather than face litigation (which Gamevice has pursued aggressively against others in the past), Razer did something smarter: they partnered. At CES 2020, Razer debuted the Razer Kishi
The author traveled to Las Vegas for CES 2020 via a press pass provided by Razer’s PR team. No compensation was received for this exclusive coverage. No compensation was received for this exclusive coverage
If you find one cheap second-hand for an older iPhone (iPhone 6–8 or iPhone X/XS), it’s a fun piece of gaming history. But in 2026, skip it. Modern controllers offer better ergonomics, USB-C, and broader phone compatibility. leading to battery drain under load.
The iPhone’s Lightning port only provides 3.3V at a limited current. Gamevice’s rigid design required a power-hungry haptic motor (Hypersense). In testing, the controller would drain an iPhone 11 Pro from 100% to 0% in 2.5 hours of gameplay without charging the phone. Pass-through charging was throttled to 5W, leading to battery drain under load.