Quick share already camed via one ui 3 update then why it's telling added quick share ??

Same in my a50s I get 7 hrs even after playing pubg for 3 hrs

No chance it's an hardware not software

If you want to save battery then goto galaxy store search for "s power planning"Download the app then goto settings》device care 》battery then select s power planning option and then click on extend battery life option and select level 2 or 3 and keep...