iDoctor

Not really. The logic boards are slighty different so the 4s logic board won't fit correctly.

unfortunately if you've tried a new battery and cleaned it and all that good stuff the phone might be shot. Once water gets in there the phone is completely unpredictable.

It's hard to tell what could be wrong because no one else knows what your soldering looks like. Things that can go wrong when you do this repair are that you could have torn one of the pads off while unsoldering the old battery. you could have overflowing solder that could be touching the other pads. you might not have a complete connection with your solder. I would check the voltage of your new battery and make sure its sitting somewhere around 3.7. That would tell you whether that battery is good or not. Other than that it's hard to give an answer without seeing the solder job.

Actually I wouldn't say it's a spring. On the flex cable of the power button there's a little black plastic piece that makes contact with the power button. This black piece almost always wears out on apple products. The fix would be a new power flex cable.

Have you tried a soft reset? If not, make sure there are no tears in the flex cable of the lcd. Make sure it's fully connected. Did you turn the phone off before unplugging any of the flex cables?

The glass of the ipad and the touch are the same thing. If you broke the ipad bad enough it could stop picking up the touch. By replacing the screen (digitizer) it will fix this problem. As for buying the digitizer, get the one that has the connection already soldered to the digi. It's a nightmare for someone who hasn't soldered to try to solder this.

Buy a new lcd and digi combo and replace it. You're lcd is what broke.

I would go in and make sure that all the connections to the logic board are completely connected. Make sure the screen is all the way down if the home button isn't working.

I believe the pin you're talking about is part of an antenna so it might affect your signal.

Replacing your logic board would make your iphone 5 a completely new iphone 5 or at least a different iphone 5. If you forgot your pass code you can turn the phone off, hold the home button, and plug it into itunes and restore.