Opt out of the duopoly by getting a freedom Linux phone like FLX1s from FuriLabs, or the Mecha Comet with cellular modem. Or if you're technical, you can instal

Opt out of the duopoly by getting a freedom Linux phone like FLX1s from FuriLabs, or the Mecha Comet with cellular modem. Or if you're technical, you can install postmarketOS on a Fairphone 5 or OnePlus 6. Sendero Linux sells refurbished ones with pmOS preloaded.