It's KaiOS[1]. I think their biggest hit was the JioPhone in theIndian market[2] but the phone lineup is quite impressive for an alternative system. They've go

It's KaiOS[1]. I think their biggest hit was the JioPhone in theIndian market[2] but the phone lineup is quite impressive for an alternative system. They've got some funding from Google[3] as well. [1]: https://www.kaiostech.com/ https://www.kaiostech.com/ [2]: https://www.financialexpress.com/industry/technology/reliances-jiophone-no-longer-top-selling-feature-phone-loses-spot-to-samsung/1745497/ https://www.financialexpress.com/industry/technology/relianc... [3]: https://www.theverge.com/2018/6/28/17513036/google-kaios-investment-feature-phones-firefox-os-apps-services-strategy https://www.theverge.com/2018/6/28/17513036/google-kaios-inv...