Ultra Power Saving mode strictly controls background apps to ensure that your tablet can stay on for as long as possible. In this mode, you will only be able to ...
Go to settings > Battery, you will find power saving options. Also if you go to settings > Device care > performance profile. You can choose light or standard.
There are 9 apps available in the ultra power saving mode: 5 default (phone, sms, samsung internet, calendar & clock) and 4 custom which can be whatever app is ...
You have to turn off Power Saving first, then you'll be able to turn that other option on ps: after turning that option on do the same with power saving.
I found a Solution for those who are still Stuck in Ultra Power Saving Mode. If you are stuck at Samsung Logo, call your own number and you will get option to ...