Phone is not one

@paripinkushashi your "Phone is hanging display is not working" would be pretty normal when "phone is dead" The First thing I would try to find out is what it is dead. Change the battery, check the charger, check that charging port. Plug the charger in and measure the voltages on your battery connector. That voltage will have to increase. If it doesn't you are having board issue.

At bare minimum you want to get yourself a USB ammeter and plug your phone into it. Then see how many amps it draws. You gotta start somewhere, so might as well be on the power circuit.