iPhone 6 plus started going crazy then turned off. Will not turn back on.
A few weeks after I purchased my iPhone 6 plus shattered from the lack of a good case. Once this happened I protected it like a baby. I made sure water never got in it. One day these three black lines appeared on my screen. I didn't think much about them until my iPhone started acting crazy. It would select apps by itself and scroll on my webpages. I would fix the spells by simply locking my iPhone and the unlocking it. This went on for a few days, until yesterday it turned green and black and flickered. It completely turned black with those three black lines now white, but siri still worked. I thought resetting my phone would probably take care of the problem, but now my phone will not turn back on. When I plug it in it will vibrate twice every 6 seconds. I do not know what to do. I do not have the funds to buy and new one, but simply cannot live without it from work and school. Does anybody know what to do?
iPhone 6 Plus, iOS 8.3