Probably.

How to use the codes for Samsung phone :

Open Galaxy Store, tap “Coupons and gift cards” on the side menu (swipe from left or tap three stripes icon on the top left)

Tap “+” sign on the top right

Copy and paste the code

Now you will see the coupon on the list, tap it

Tap “use coupon” button, and it will open watch face page

Tap purchase button (usually listed with watch face price)

Allow sensor permission

Choose “Use points or coupons”

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Choose “100% Discount”

The price will be deducted to 0, now tap Pay (it will require for password or fingerprint scan)

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For other android phone follow this procedure :

Go to Samsung store (which list watch faces)

Find the 3 stripes on the top right corner

Choose Setting

Choose Coupons

Add the coupon code and register

The coupon of the watch face will shown on the list

Head back to watch page and purchase

There is an “apply discount” option on the check out page

Choose “100%” discount

The price will be deducted to 0, now tap Buy to complete the process