Can I use the Amazfit T-Rex 3 to find my phone?

Yes, you can find your phone by swiping down on the watch face to access the Control Center and tapping the 'Find Phone' icon. As long as the watch and phone remain connected via Bluetooth, your phone will vibrate or ring to help you locate it. You can also find the 'Find My Phone' feature within the watch's App List under the 'More' section.