How to pair my Amazfit T-Rex?
Please download the Amazfit app through any app store, and register or log into your account.
Open the app and go to "Profile – Add device – Watch – Amazfit T-Rex" to start searching for nearby devices.
Once the watch is searched, follow the prompts on the watch to complete pairing.
4) Once paired, the watch usually needs to be updated. Please wait for the updating process to finish. With the mobile network and Bluetooth on, you also need to keep the watch close to your mobile phone in order to ensure a successful upgrade.
6) If you need to unpair your watch, open the Amazfit app—Amzfit T-Rex and choose "Unpair" on the device page.