Hey Samsung Team.I have my first Device Samsung J7 4G.Only the the issues is 1.5 GB RAM. Due to Device getting HANG.That's whydo not downloadtoo many apps.Can you please provide the Virtual 4 GB RAM for this my Old Device Samsung J7 4G via Soft...

I am not getting battery backup . I have updated latest software and also update the latest app But till now getting the same issues Battery is draining too fast. Battery completely discharged within a DAY. Can you please resolve this issues or exc...