Battery saver mode on Samsung Galaxy S9+

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Android Central Question

Hello, as you can see from the model, my phone is old and the battery does not last very long. The phone supports the following battery power modes: Performance, Optimized, Medium power saving, and Maximum power saving.

If I am out and not able to charge the battery, I have to put it in Maximum power saving mode and that makes the battery last a long time as it shuts down most background processes, along with other settings.

My question is: is there a way to use the maximum power saving mode with biometrics turned on? I hate to keep typing my password every time I need to access the phone. Or is there an app that would mimic such behavior?

Thanks!
 

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