"Dear Customer, Thank you for your query. Kindly contact Samsung Customer care support for any issues pertaining to product please visit Samsung official website > Click on ""Support"" > Select “Live Chat”, to connect to our product support expert. Regards, Samsung India" Remove the back cover and keep the fan switch on. "Dear Customer, Thank you for your query. Kindly contact Samsung Customer care support for any issues pertaining to product please visit Samsung official website > Click on ""Support"" > Select “Live Chat”, to connect to our product support expert. Regards, Samsung India"####[]