How do I pair the Amazfit GTS 3 with my smartphone?

Scan the QR code on the Instruction Manual to download the Zepp app, or download it from the Google Play Store or Apple App Store. Open the app, register an account, log in, and follow the in-app steps to pair your watch correctly. Do not pair the watch directly using your mobile phone's Bluetooth — always use the app. Once pairing is complete, the watch will display the correct time. (Page 4)