My phone screen went completely black today after I put it away for about 20 minutes, it did not fall nor was anything heavy placed on it. When I pressed the home screen or power button nothing happened but when I turned the ringer on and off my phone would buzz like normal. Before this happened my phone was at upwards of 70%. I asked my friend to text me and when she did the phone buzzed twice but did not light up. Siri still works and I'm able to send texts or play music and stuff by telling her to do so. About 20 minutes after it first went black, it did respond to me pushing the home button only to be oddly dim (dimmer than the lowest option for screen brightness), black lines going from the top to the bottom and half of my friend's name was visible, the other half either extremely less lit or just not there. I tried unlocking it but the screen was unresponsive. It went black again for a few hours and has only lit up three times in the last six hours. I tried holding down the home and the power button and I tried plugging it in but it did nothing. Is my phone dead, is there an inexpensive fix? I unfortunately do not have warranty.