Hi everyone! So after a hard reset, or network setting reset my iPhone 6 will stay connected to AT&T for a while(un sure...

So I just bought a broken Macbook Pro 13" 2.3ghz i5 2011 thinking it was just running extremely slow and having glitchy...

If you hold down the option key while turning it on does that help? Try listening very closely too see if you can here any fans or start up disks spinning when you first try turning it on. Also, does the power adapter light turn green/orange while plugged in?

Have you tried doing a full teardown of the phone and thoroughly drying each piece in rice? If not do that first. Then, normally the first part to break from water damage is the battery, so you can try replacing that, and if that doesn't work the Lightning Connector Assembly is also commonly broke because of water damage. And if both those don't fix it then it's your logic board most likely.

You can try disconnecting the display cable and reconnecting it. It's step 9 in this guide: MacBook Unibody Model A1278 LCD Panel Replacement

It can only be upgraded at the time of purchase because it is On-Board RAM with no ram slots.

Did you try the extended Apple Hardware Test? Also did you install Yosemite from online or your own copy? You could some how have a faulty copy if so.

Is there any way you could test both these screens on another iPhone 6? If they still don't work on that phone then you know it's the screens. But what I'm guessing part of the pins on the terminals to your logic board might have got bent. Look close at teach pin on the board where the cables connect and make sure it all looks correct.