complement - SMS text is shown correct at both bands.
And another note: whatsapp notification begins with a rectangle inside a question mark, then the name of the sender with colon, then rectangle inside a question mark again followed by "message" and timestamp.
maybe something wrong by resources?
My wife has miband 3 too and receives whatsapp messages whose text is displayed on miband3 - my own miband3 shows just new whatsapp message but no text of the message! Why???