I've updated the Arduino Low Power library to 1.2.0, I've called sigfox.end(); : I get 500 uA (+/- 100 uA) during the sleep mode. Progress, yes, but not as much as expected reading the components data sheet + MKRFOX1200 schematics.
End of my posts on that subject.
mkrfox1200-testsleep.ino.ino (2.03 KB)