Galaxy S3 Disassembly & Assembly - Sim Tray - Loud Speaker - Buzzer - Earpiece Repair

To disassemble and reassemble your Samsung Galaxy S3 You will need a small Philips Screwdriver A small bladed screwdriver Possibly a pointed tool of some kind And maybe a plastic separation tool or you can use your thumbnail First of all make sure its switched off and remove the back cover Take out your battery remove your micro SD memory card and take out your micro sim card Now we need to undo 10 Philips screws around the outside edge you can skip this part by clicking the link (next) at the top of the video and do not worry about getting the screws mixed up as they are all the same size This is one of the moisture indicators which will change colour if its been wet Now we need to remove the back cover so lift the centre up and keep lifting it up and eventually the top will pop open there is a single clip just here near the camera keep lifting the back away and that will come unclipped from the bottom as well this cover contains another moisture sensor and there is a GSM and 3g antenna at the bottom and there is another antenna just up here at the top if you are replacing the screen its a good idea to test it before you disassemble the phone start by releasing this main screen connector here place a bit of sticky tape over the top to stop it shorting out on the new screen plug your new screen into this connector replace your battery and switch your phone on like you normally would do once you are happy the screen is working OK shut the phone down, as you normally would do when it has shut down, remove the battery and take off the tape if the screen is faulty then you can plug this back in and get a replacement screen if you need to replace the headphone socket or the loudspeaker it comes as one complete unit start by releasing this ribbon connector just here and using your nail or a plastic tool lift this up, and it comes away quite easily this also contains 2 antenna's, the connections are in each corner here and you can see the circuit going through there if you need to replace your sim tray or your micro sd tray then lift this ribbon connector up being careful not to damage any components nearby and its held on with double sided tape so insert your blade here, just push it along until eventually it separates and you can lift that away and replace that if you are replacing the screen we need to remove all the components that are attached to the metal frame so we start by disconnecting the ribbon connectors at the top this ones for your earpiece, power LED and your volume switches so we unplug that this connectors for your secondary camera and your proximity sensor so lift that up and coming down to the bottom we have the main screen connector fold that back and we have a single black screw to undo at the bottom its the only one there so you can't get it mixed up and we have the antenna connection here now when you disconnect this try not to lever from this side because it pushes it up at an angle so if you lift it off from this side it does not put any stress on the plug so carefully lift this out from the channel and come all the way down to the top of the phone and this little circuit is held on with double sided tape so carefully get your screwdriver in there and lift that up and put that aside now we can lift the mainboard out so carefully lift the camera and just ease the mainboard up away from the body now if you need to replace the camera that is quite straight forward lift the ribbon connector up gently lift that up and then you can replace the camera offer your replacement up and line that up as best you can and plug that in this is the secondary microphone at the top of the phone this is your power switch and various antenna connections this is your main microphone at the bottom of the phone and the micro USB socket the other side these are 2 antenna connections listed as W1 and W2 on the back cover I think this provides external antenna's for the GSM/3G radio and possibly Wi-Fi or GPS and the LED flash is fixed to the board the vibrating module can be removed by using a pointed tool just insert it in there and gently lift that up then carefully ease the ribbon connector off the board held on with double sided tape again get your screwdriver in there and lift that up and put that aside.. and here is a microphone gasket you may not get this with the new screen so you might have to lift this out and then put that into your new screen its got a little tag at the bottom so you cannot get it round the wrong way coming up to the top we have got the secondary camera and the proximity sensor, so undo this silver screw and its quite a bit different from the others so you cannot get it mixed up now carefully lift the secondry camera and the proximity sensor out from the case then we have the earpiece, power LED and volume switches now to remove these you need to push this volume key out from the back so just get your screwdriver in here and push that out top, bottom and middle and you will find that comes out reasonable easy when you put it back in make sure you put the slope towards the back of the phone to release the volume switches, insert a thin blade and carefully lift them away from the body try and keep the double sided tape on the switch itself once your happy that is released come round and lift the ribbon cable up gently lift it up towards the earpiece, and there is another moisture sensor at the top here come all the way along, just releasing the ribbon eventually you should find that lifts out reasonably easy now if your new screen does not come with this metal chassis you will need to use heat to release the screen from the frame and then put the new screen back in I will try and make a video of this in the future you may have to switch over this little gasket here if your new screen does not come with that and the power button, if you need to switch that over then push out from the bottom here give it a good push and it will come out there you go.. and again when you replace it, make sure the slope goes towards the back of the phone push that back in again, there you go so for reassembly start by offering up the volume switch into the casing so line that up as best you can put that into place so the switches line up nicely with the holes in the case there once your happy that is in place move this ribbon cable so it lines up with the little pin on the case there then offer up the power LED to the case and then put the earpiece back in and make sure the ribbon cable is pushed down and finally make sure this little pin is lined up with the ribbon connector and just give that a gentle push down into place now we can replace the volume key make sure the slope of the key goes towards the back of the phone and offer that up into place and make sure they feel ok now we can replace the secondary camera and proximity sensor offer up the camera into place and the proximity sensor once you are happy that is in, take that large silver screw and just do that up finger tight now we can replace the vibrating module so offer that up into its hole and making sure that the 2 little pins line up on the case there give that a good push, make sure it is stuck down now we can replace the mainboard start by offering up the main camera into the top, hold that ribbon cable back and just carefully bring that down into place bring it down all the way and we will replace that small black screw in the bottom there now we can reconnect the main screen ribbon just pop that back into place and the volume and earpiece ribbon and the secondary camera line it up as best you can and pop that into place once you are happy they are all connected we can put the sim tray back on again so line up the holes in the sim tray with the holes in the case once you are happy they are all lined up, give it a gentle push but do not push too *** these pieces because you will bend the casing just push around the edge, just to stick it down and then plug that ribbon back in again now we need to replace the antenna cable so start by offering up this circuit at the top here and you have got 2 little holes that line up with pins on the case so make sure they line up and just gently push that down, do not push too hard just to get the double sided tape stuck down then bring the cable down into this channel gently pushing it down as you come along lift that little bit of sticky tape up and get the cable in there and put that sticky tape back down again now take your time when you reconnect this line it up as best you can it can be a bit tricky line up that head so it is nice and square, then push it back down if it is down properly you will see it sits nice and flat I think it might be for Wi-Fi or Bluetooth and make sure that cable goes back down underneath that circuit board there, there you go and now we can replace the loudspeaker and headphone assembly so offer that up to the top, and push that down into place once you are happy that is pushed in offer up this ribbon connector as best you can and plug that in just a final check to make sure everything is plugged in and in place and now we can replace the back cover so offer that up and then push that down into place there is a few clips at the bottom here, push them down and now you can replace those 10 Philips screws you can skip this stage by clicking on the link (Next) at the top of the video replace your battery after replacing your sim card and your memory card replace your back cover and then you should have a fully repaired Galaxy S3 Thank you for watching please subscribe and give me the thumbs UP and I will do my best to make some more :-)