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Hey guys,i wanna ask you a question about my phone,today i wanted to replace my screen and battery (which i ordered and will be delivered next week),but just wanted to see first the phone inside,i read the guides here on the website and watches videos about it,i got out the screen successfully and the battery too,but after i placed the battery back and the screen without the metal brackets,just to see the phone is working,it doesn’t give any sound or anything when i plug it to my pc,i know it’s a dumb question as i am,but i dont know what to do now,i dont think i ripped any cable or connector cuz i was working with plastic tools and i was aware of having this problem..should i wait for the new screen+battery and try with those or did i did something wrong?

How did you remove the battery; did the pull tabs work properly or did you have to pry the battery out? There are some components near the edge of the logic board, just above the Dock connector, which can be damaged if you apply pressure to pry the battery. Most of those passives are related to the Audio Codec IC…

Try checking the ribbon cables near the dock connector. You might have damaged one of them. The next best bet is that you damaged the logic board. Good Luck Fixing.