In order to accept payments via Samsung Pay in sandbox or production, you will need to enable it in the Control Panel. All eligible merchant accounts will be enabled once you once you do the following:
- Log into either your sandbox Control Panel or your production Control Panel
- Click on the gear icon in the top right corner
- Click Processing from the drop-down menu
- Scroll to the Payment Methods section
- Next to Samsung Pay, click the toggle to turn it on
You are not required to sign up with Samsung Pay directly, as configuration is handled internally by the Braintree SDK.