1. Enable Wifi Calling Features
2. Enable Fast Charging Features
3. Enable Camera 2 Api
4. Increase Ram Performance
5. Remove Extra App
6. Add Vedio / Audio Recording
7. Add Native Video Calling
8. (Increase Network) Apn List [Many time we not get proper speed on same network compare to other devices].
9. In Android 10 Developer Update In Background gallery app is running stop them.
10. Increase battery Optimization
11. Many times on more usage screen star laging stop response on tuch solve this issue.
12 . Improve Sound Output Quality
13. Provide basic applications like gallery , music etc