Fit 3 keeps disconnecting

[Afiii_here]

My samsung fit 3 keeps disconnecting from my mobile even though Its a Samsung device. It is so frustrating to reset and pair it again and again. 

[Hearttt]

Restart both devices (Fit 3 + phone).
2. Open Galaxy Wearable → Reset Bluetooth connection.
3. Turn off Battery Optimization for Galaxy Wearable & Samsung Health.
4. Update firmware on both devices.
5. If still disconnecting, Unpair Re-pair the Fit 3.

[ShahidAslam]

If you are using Bluetooth older than 5.3, then it gets annoying. Same issue was with me with Samsung A04. I'm using 07 now and working fine.