Hello all, I have an iPhone 3gs that the sound completely stopped working during calls and then the speakers stopped working and then the headphones also don't work, also no matter what I do it does not produce any kind of sound. Well, I had cracked the digitizer when originally taking it apart, (this is because it already had a small crack in it and when i pushed it in it cracked big time) however I did just fix this and also purchased a new Earpiece Speaker, and Headphone Jack Ribbon w/ Switch US. ( these have not come in yet.) I also purchased a Usb Charger Port Dock Flex Cable + Mic + Buzzer Ringer or Loud Speaker + Antenna Sticker Receiver Pre-assembled. (this i have replaced in iphone.) After replacing the port dock and putting phone back together, still no sound. 
I am waiting for the speaker and headphone ribbon to still come in and i will replace those, hopefully then it will work.
Side notes:
I have looked this problem up many times and never found any kind of solution or seen that anyone else has had this problem. Sometimes (very randomly) the sound will work through the speakers and make a crackling noise along with it for about 20 seconds, then it goes away. I have also tried to clean the headphone port out and plug and unplug the headphones several times to see if that would work. Still nothing.
I hope that someone can help me with this problem because I am deployed overseas right now and am returning home in less than a month and this is my only phone. I'm hoping to get it fixed. If anyone needs any more info just post a question and I will answer promptly. Thank you so much!
I am waiting for the speaker and headphone ribbon to still come in and i will replace those, hopefully then it will work. Side notes:
I have looked this problem up many times and never found any kind of solution or seen that anyone else has had this problem. Sometimes (very randomly) the sound will work through the speakers and make a crackling noise along with it for about 20 seconds, then it goes away. I have also tried to clean the headphone port out and plug and unplug the headphones several times to see if that would work. Still nothing.
I hope that someone can help me with this problem because I am deployed overseas right now and am returning home in less than a month and this is my only phone. I'm hoping to get it fixed. If anyone needs any more info just post a question and I will answer promptly. Thank you so much!