1) Open Samsung Members app
2) Scroll down to find the Benefits section
3) Open the Calm promotion and click on "View details" (promotion redemption to be done on Samsung Health. Payment details required)
This promotion will give you 6-month free access to the Calm app, no matter if you use Calm on Samsung Health or the full version of Calm. Remind to unsubscribe before the free 6 months period ends!!!
IMPORTANT Promotion applicable to Australian Samsung devices running Android Pie (9.0) only. If you don't see the promo on Samsung Members app, then your device doesn't qualify.
Looks like it's targeted. Saw it on a friend's note 8 but not my s8.
Edit - I got the free battery back but he didn't.
Can't win them all!!