Why won't my iPhone turn on after I charge it?

I've had issues with my IPhone telling me it is a 100% all the time and today i have found that my phone was dead in the morning after charging all night...

so i thought it was an issue with the cable so i switched it... i tried multiple chargers and none of them worked. The battery symbol shows up and doesn't say it needs to be charged. Ive tried resetting my phone by holding down the home and power button and the apple symbol will not show up. What can i do?