after 30 minutes of usage the device gets overheated and battery drains very fast and then the device doesn't work properly. The lower part of the screen doesn't work some applications automatically gets opened . The device hangs very much after over...

my status bar colour has changed to black .I want to make it silver again. do you have any suggestion for this

when will be nougat to Oreo update will be coming in J7 MAX...... I really need that update