Today received March Secuirty Patch update and after installing when I checked in detailed document it shows 2021-02-01 update and released on 2021-02-18. But at settings it's shows 2021-03-01.
That's why wondering if it's same or new update. Anyhow I didn't notice any improvement in battery performance after update and camera heat up issue still to be verified. Will check and update soon
Sorry to hear. Please bring the device to a Samsung Service Center to have it checked out and help resolve the issue.
Find the nearest service center to you online.