I disassembled and reassembled my iPhone 4 to try to fix a problem with the audio compiler (for the last two weeks, no one can hear me on calls) with a fix I found online to secure the connection. I followed a video tutorial for disassembling and reassembling. The first time I turned it back on, the screen was really faint and shaky, but I could still see the apple logo and icons. I disassembled again and reassembled to check all the connections.
The second time I turned it back on the screen is just blue with lines. What did I do? I have checked the connections again and they seem to be fine. I'm going to lose my mind, now my phone is completely unusable. Please don't say "take it to a repair shop like you should have done in the first place." I can barely afford groceries, this phone was a gift I certainly couldn't have afforded. I do not have a back up phone that will fit my sim card.
Any ideas about what is wrong and what can be done to fix it will be appreciated more than you know.