Guides I've Contributed To
Answer to "How do I access the phone battery?"You can replace the battery by following this guide.
Answer to "Why is there a permanent black spot on my screen?"The problem sounds like a "dead" pixel or a group of dead pixels. Your display may have been damaged somehow. You can replace the screen using this guide.
Answer to "Why is the sound distorted when I use headphones?"Since the speakers work fine, and the headphones themselves work fine, the problem is probably your headphone jack. Follow the steps in this guide to replace it.