For a few days now, the phone itself has been acting odd. Sound has been fine, and the battery is always above 50%. Two days ago, however, it shut itself off. It took a few minutes worth of constant holding of the home and power buttons for it to hard reset, and when it did, it displayed the Apple logo, turned off, displayed the Apple logo again, and took about five minutes to start back up. Since then, it turns itself off every few hours, and it takes up to ten minutes to turn it back on. It’s been at 100% for a full day now, and I have noticed that it doesn’t turn itself off when the phone is unlocked. Sometimes it will become extra sensitive to touch in the upper-right hand corner of the screen, but otherwise, it’s fine. The Touch ID works fine, as does the camera. When I tried to force it into recovery mode, the screen wouldn’t display anything. Is this an issue with the software, the touch screen/display, or just the phone going bad?