The model of my phone is GT-E2120 as mentioned here,my phone is not getting switched on,i don't know why. It was initially getting switched off for every five minutes but now it has got switched off completely and I have tried switching it on but it's not getting switched on and i have also tried plugging in the charger but there is no difference,it remains to be switched off.Am not understanding what the problem is,how do i fix this?please help..