My Favorite Guides
Answer to: Screen is black & unresponsive after openingConnect phone to computer with iTunes open. Then on the iPhone hold power and home for 10 seconds, then release power button but hold home button another 5 seconds. iTunes will see the phone in dfu mode and try and restore it. Here's where it sucks..iTunes will try and update the phone and one of two things will happen, either iTunes will update the phone or it will get stuck on waiting for iPhone then eventually you get error 9. If that happens then something is bad on the board..
Answer to: White Lines just popped up on tv screenUh oh. I had this happen before and turned out to be a blown capacitor on board. I had dismantle the back panel and searched the entire board. When I found the capacitor i knew it may be the culprit because all capacitor are flat on the end and this one was rounded. Took a soldering iron to remove as much solder as I could from the capacitor spot and then I took a heat gun to it to pull the capacitor. Be sure to use that yellow heat disapating tape around the capacitor so you don't over heat nearby capacitors. Find the same capacitor on eBay and that was it for me.
Answer to: Very poor Wifi Range (advanced)I had this problem too and I figured this out and fixed my wifi signal...take a look at the speaker of the iPhone. You will noticed a bunch of little hooks located on the north side of the speaker. Make sure that those little hooks go under the frame(that's the metal under where the battery is seated, then screw the speaker down and make sure no hooks lift. Also take a look at the wifi antenna, there is a piece where an abnormally long screw goes, make sure there is a metal clip there! If you don't see that piece than you lost it while you we're fixing the iPhone. That metal piece is required for good signal.