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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@johan_m_o
Yes, Oxygen OS is very aggressive when it comes to killing background processes. If you haven't already, make sure that Gadgetbridge is allowed to autostart and that it's removed from battery optimisation. And that all permissions are given to the app.