I was listening to music on my cell phone the other day with headphones when I accidentally caught the headphone wire on a door knob. The knob pulled the headphone plug out of the phone and when I plugged it back in, the sound came out of the phone instead of the headphones. Uh oh. I looked into the female jack on the phone and saw that one of the tiny connectors was bent back. I’m guessing it wasn’t touching the headphone plug any more which resulted in the phone not swapping over to headphones like normal. I tried to pull the connector back out with a tiny pick but had no luck.
Fearing that it’d be an expensive repair, I started searching around online. I found that the headphone jack is part of the “Speaker Flex Cable” that is surprisingly pretty cheap. Yeah, I know. It’s probably a knockoff. I ordered a couple new flex cables from a site called Durapowerglobal.com for $4 a piece plus shipping. I know nothing about them but they had a some good reviews. So, I ordered two cables from them and they arrived in a couple days. You can find other places online to order from including ebay of course.
Here’s how to swap the cable out. Flip the phone over so that it is face down and remove the cover plate as if you were removing the battery.
After this, you’ll see seven small screws that need to be removed to access the internal circuitry of the phone. You don’t have to remove the battery but it’ll fall out anyways so you might as well.
With the screws removed, you can remove the back piece. Slip a plastic tool made for doing this, your fingernail, or something else non metallic between the front bezel and back piece to separate them. The seam (green arrow) shows where to separate. Go from one side, to the bottom, and up the other side separating the halves. The top of the back part is retained by the headphone jack. As such, you’ll need to rotate the back piece up and around it.
With the back piece off, you have access to the flex cable. I’ve circled it in the green below. First carefully pry the connector up and off. The connector is the part that says “SGH-i777” on it. Once it is off carefully pry the other parts of the flex cable up. They’re held with a rubbery glue that doesn’t seem to harden.
With the flex cable removed, you can install the new one in its place. The part at the top right of the flex cable, ear speaker I think, folds over and into its spot while the other parts just press down. Therefore, press it in last. Make sure the connector pops back into its spot correctly too.
Here’s the new flex cable installed. You can test it at this time, but be careful not to break anything because the back piece holds the flex cable components in place.
Reassembly is the opposite of dis-assembly. So, put the back piece back on, top first. Install the screws, battery, and back cover. If everything went well you phone should now be back in working order.