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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.
@user156051
Yes, I have other apps installed.
But I'm sure that it was
Loading...on the screen when Bangle became discoverable. And I did some experiments to find that it won't advertise itself until I swap app (withLoading). However, the time window is usually short. If I try to connect to Bangle, the connection will fail and refreshing the bluetooth list will cause it to disappear. So my little theory is that, maybe bluetooth was turned on for a short time, before being turned off due to setting ?