It would appear that all those running One UI 3.0 lost their Battery Stats at the start of 2021.
Settings > Battery and device care > Battery Usage since last full charge
Luckily, a fix is available for this bug as described in the following SamMobile article...
One UI 3.0 can’t show battery stats for 2021 on your Galaxy phone? Here’s a fix
Hope that helps.
Settings > Battery and device care > Battery Usage since last full charge
Luckily, a fix is available for this bug as described in the following SamMobile article...
One UI 3.0 can’t show battery stats for 2021 on your Galaxy phone? Here’s a fix
Hope that helps.