The diagnostic tool found in the Samsung Members App I would say is accurate as possible @mun_96
Tske a look in your Device Care Section under Battery to check if any particular app is using up more battery than normal.
If there is then you can take cation such as clearing it's cache files and consider tweaking it's preference settings, use sleep or deep sleep mode and or uninstall it.
There you can use the optimisation tool too.
Also consider clearing the phone's System Partition Cache Files Section as thus can help.
> Clear Cache Files from the phone's System Partition Section > https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/ You may need to insert your earphones or hook upto a powered On Laptop or use a Tv's USB Port to access the Clear Partition Section. This may help with lag or stutters as this clears the phone of old/unused or broken cache files.There is also a Repair Apps option in the Menu System too.
Take into consideration that a batteries performance will reduce over time with how it functions in powering the phone.
It's a natural progression of wear and tear from using the phone and charging and recharging cycles.
A Samsung Service Centre can assess your phone and advise whether a new battery is advisable.
If I can be of any further help then please don't hesitate. Take care. 😎
Daily Driver > Samsung Galaxy s²⁴ Ultra 512Gb ~ Titanium Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
