Revamped version of the iPhone 3G with faster processing speeds. Repair of this device is similar to the 3G, and requires simple screwdrivers and prying tools. Model A1303 / 16 or 32 GB capacity / black or white plastic back.

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I replaced the battery in iPhone 3GS and still does not work?

I received an Iphone 3gs second hand and was using for about a month. I went to turn it on one morning and nothing would happen. I plugged in to charge and it became very warm to the touch. I thought it might be the battery so I bought a new battery from i fix it and installed using their step-by-step guides. After I had the battery installed and was putting the phone back together the phone became very warm again. I tried to turn on - nothing. I tried to charge - still nothing. Any ideas what is wrong with it?

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Extreme (or sudden) warmth from these phones, especially when not under heavy operational load, typically indicates a short somewhere. Can you try running the phone w/o the back on and see if you can identify where the heat is coming from.


pretty tricky to do that on an iphone..take a good look at how to get the battery out and you'll see what I mean. The back holds the battery to the motherboard via a single screw, the screen is secured in place by 2 screws through the'd be a real juggling act. It'd make more sense to do this without the screen on... as all the components are on the top of the board.


Thanks for your responses. The heat just occurred for a short time when I connected the new battery. Now nothing will turn on or happen with the device. So I am not sure how I can identify where it is coming from if I can not get the phone to run.


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the phone doesn't have to run...when you connect power it generates warmth as the components start to work. In other words if something is cold it is NOT receiving any power and if it is too hot (cook an egg hot)then that part is receiving too much power and will shortly decide to go phutt (or blow a fuse and then it will be cold as the power has been disrupted) You need to find out why too much power is getting through and work out what it damaged using either the heat/cold or a multimeter to check fuses etc around cold parts.

Does your phone get recognised by itunes when you plug in USB?chime when it's on charge?It sounds like you tried to reassemble the phone when it was on? Have you taken the phone apart..let it rest for about an hour and then reassemble. Charge with wall charger for 1 hour and then try turning on/reset. If your phone was on when you assembled it will sometimes not recognise LCD etc and you get a black matter how many times you try charge/reset etc.(this doesn't mean the screen is dead it should be fine)

I think perhaps the original problem was in the dock/charging circuit but let's trouble shoot the rest first.

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i had the same problem when i change the baterry it heating i thinks that its heating from de ram chipset because i found and diagram i can touch for find the mobo hottest area and i think that d ramchip is the area can you help me????

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