My phone not turn on

My device not turn on yesterday,now its still not turn on,there's look like have a sign of life,here is was happened

I used my phone smoothly,and then it suddenly shut down(it not overheating or hot) when i tried to hold power button,safe mode,recovery mode and download mode but... nothing happened,i tried to charge it,an nothing shows on the screen(except the flashlight is on),it keep turning on when i charging it,but there is nothing on the screen,i tried to power it on,recovery mode,safe mode and download mode,but nothing happened,the battery is fine(because I just bought a new battery),i tried to charge for like 30 mins to 1 hour,even i charge it 3 hour,it just turning on the freaking flashlight(the device when charging is fine,no overheating or hot) screen fine,everything fine but not power on

Please.. help me as soon as possible,there is some important data in there and thats my only main phone