nope,samsung had confirmed that no always on display given to old flagship

i tried before, it drained battery very fast
and if u charge ur phone while using this,ur phone will get hot easily and fast charging will not be supported

is new for consumer but is getting old for samsung

yup,about 1% for less than 10mins for my phone

u can download lockscreen widget from play store

https://play.google.com/store/apps/details?...a.screenofflock
been using this widget since using s3

try restart and check the battery usage to see which apps drain the battery

1 gb is enough if u only use for facebook news and whatsapp those
exclude gaming

i am using 3gb now, rm25 1gb+1gb(free) + 1gb(free monthly when stay active) for umobile
i did play some games , facebook,whatsapp with my mobile data
but still i cant finish it in a month so i think 2gb is actually enough

Samsung adaptive fast charging is actually using same tech like qualcomm fast charging,so any charger which compatible for qualcomm fast charge can be used on samsung