MagicalUnicorn said: Languages included in firmware :

Chinese, English, Spanish, Russian, Korean, French, Indonesian, Polish, Italian (since 1.1.0.4)

Thai and Japanese (since 1.2.0.8) Click to expand...

This is not true. I am Polish, my phone is in Polish and Mi Band 3 is not in Polish with original 1.3.0.4 firmware. I tried the same for Italian and it is also not switched to Italian by Mi Fit. French seems to be working. So no, it's not true that these languages are supported by default. Looks that only some of them (like Spanish, English, French) are supported by this firmware & Mi Fit.