Around 2002-03 - Motorola had RT Linux in EZx range of touch phones (https://www.gsmarena.com/motorola_a760-392.php https://www.gsmarena.com/motorola_a760-392.p

Around 2002-03 - Motorola had RT Linux in EZx range of touch phones (https://www.gsmarena.com/motorola_a760-392.php https://www.gsmarena.com/motorola_a760-392.php). They were also working on a Linux based smartphone platform which was fairly advanced before scrapping it in 2004. Been a part of those teams. Do not think it is easy to introduce another smartphone platform right now without strong differentiation given the network effects. Something on wearables might still work.