How can I find the smartwatch's Bluetooth name in the Noise Fit app while pairing?


Check that you have performed the right steps to start the pairing.

Restart your phone or disable and re-enable the Bluetooth on your phone, then re-pair the watch with your phone.

Restart the watch, then re-pair it with your phone.

Re-install the Noise Fit app, then re-pair the watch with your phone.

If the watch is paired with other devices, unpair it from the other devices, then re-pair it with your phone. If the original paired device cannot be found, try re-pairing the watch in a relatively less disruptive environment (such as an open outdoor area with fewer people).
 If the issue persists, try pairing the watch with a different phone.

What should I do if pairing has failed with the Noise Fit app?

For Android :-
Clear app's cache (taking iQOOZ3 as an example) :-
Go to Settings > Apps & notifications > See all apps > App info > Noise Fit app >  Storage & Cache  >  Clear cache   
Then reset your watch

 If the issue still persists, re-install the Noise fit app, then re-pair the watch with your phone.

Why am I not able to connect phone after disconnecting it with the Noise Fit app?

Check that your watch and the Noise fit app are fully updated.

Turn on Bluetooth and GPS on your phone and grant the Location permission for the Noise Fit app.

Open the Noise Fit app and check to see if your watch can connect automatically.

If the watch can connect automatically, this issue may have occurred because the Noise Fit app is prevented from running in the background. If you are using an Android phone, you need to add the Noise Fit app to the protected list in the background. If you have installed third-party phone manager apps on your phone, add the Noise Fit app to the white list using the apps.

If your watch cannot connect automatically, connect them manually. To do this, open the Noise Fit app, go to Devices, and then go to Pair device.

If this issue persists, perform the following to troubleshoot:
Disable and enable Bluetooth on your phone and try again.
Restart your phone and reconnect the phone and the watch again.
To reduce the chance that the Noise Fit app is cleared from the background, Lock the App in the background.
Unpair your watch from the phone using the Noise Fit app and then pair them again.
For Android users: Open the Noise Fit app, go to Devices and then select unbind and pair two devices again.
 For iOS users: Open the Noise Fit app, go to Devices and then select unbind and pair two devices again. On your phone, go to Settings > Bluetooth, touch the exclamation icon next to the Bluetooth name of the paired watch, and then touch Forget This Device to delete the pairing records for reconnection.

 What should I do if I get "Trying to connect" prompt on the app screen?

Clear app's cache.
 Go to Settings > Apps & notifications > See all apps > App info > Noise Fit app > Storage & Cache > Clear cache

If the issue still persists, disable Battery Optimization in Phone's settings.  
For Android users ( taking iQOOZ3 as example ):- Settings > Battery > Battery power consumption management >   Noise Fit app > Choose Don’t restrict background power consumption