Yesterday night my phone got switched off and so I put it in charge and while I was doing it my phone was on , but morning I'm trying to switch it on its not at all getting switched on, what should I do ?
It was on, and you're trying to switch it on? The power switch will switch it off if it's on.
If it's off and you're trying to turn it on and it won't, it could be a bad battery, a bad motherboard, a bad update, almost anything - it has to go to a repair shop for diagnosis.