j7 nxt update

Solution1:-uninstall (clear data first,then uninstall)and force stop(clear cache first then force stop) all unused and unusual apps, clear caches, clear RAM, optimizing battery by putting apps sleep, force stop or disable unused useless preloaded apps...samsung apps,Microsoft apps and Google apps like chrome as it consumes more Ram and background data which results in heavy battery drain,,instead use browser, browser will take less Ram..(eg..via browser under 500KB)..clear or delete useless , empty folders or duplicate folders in file manager... don't install apps from other stores and sites, it will cause your phone damage ..if you install these apps then uninstall it.....Solution2:- change your data cable(2 or 3 Am.charger cable) and install led blinker notification app, the phone will take less time to charge i am doing this in my j7 16(only for sAmoled display) and it works perfectly around 20% to 100% in 1:40 or 1:45 hour.... https://play.google.com/store/apps/details?id=com.ledblinker ...do all these things atleast once a day for best results....apne phone ko update maat karo jab aapka phone thik chal raha h to... update karne se phele 1 mahina ruko or dekho logo ke reviews update ke bare me agar thik hai to.... phir update karo...nonstop phone use karne se bhi problem aati hai isliye phone ko 2..3 din minimum use karo....jab phone istemal nahi karte ho(raat me) to flight mode on kiya karo.. sath hi sath speaker volume sabhi cheeze band kardo ..isse battery kharch nahi hogi...