Update Samsung Pay on your Samsung smart watch

Updating the Samsung Pay app on your watch is just important as updating it on your phone. Make sure to always keep it updated, so your purchases and transactions are all smooth with no hiccups. However, the watch version of the app needs to be updated separately from the phone version of the app.
Note: Available screens and settings may vary by wireless service provider, software version, and model.
To use Samsung Pay on your smart watch with a non-Samsung phone, you must update to Android 6.0 or higher.
Update Samsung Pay on your watch
Before installing any updates to Samsung Pay, make sure your watch is connected to your phone and has Wi-Fi.
On your watch, press and hold the Back key to open Samsung Pay. If prompted, enter your four-digit PIN to verify your identity. Tap More options, tap Version info, and then tap UPDATE.
On your phone, tap INSTALL to finish installing the update on your watch.

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