One UI 8

"Hi! The One UI 8 update for the Galaxy A16 is rolling out gradually and may not be available in all regions yet.
Please check the following:

Make sure your device is connected to Wi-Fi.

Verify that automatic updates are enabled.

Ensure there is enough storage space for the update.

If the update still doesn’t appear, restart the device and try again later, as the update may not have reached your region yet."