User Activity

plz improve rear camera quality ...pictures are low in details nd also blury from bottom and sides
while using secure folder apps some time my phone get restarted. nd sometime it says system UI stopped
about 84% ram used all the time without any app opened..this make my phone slow..plz fix the ram usage in next update
whenever i want to record video it show this
there is error in samsung keyboard....sometimes it stop working in all app ..every time it start working after clearing cache ..what is main cause ??