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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 / 8, 16 or 32 GB capacity / black or white plastic back.

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iPhone won't turn on at all after battery replacement.

Hi iFixit,

I'm a fan of you on youtube, I will thank you for teach me more about iphone on youtube. I have a problem, I replace my 3Gs battery everything goes perfect. I put my phone in charge and fall in sleep, when I wake up, my phone won't turn on. can you help me ?? I changed the cable and also try to put it on my PC but nothing happend, I also hold the home and power button but nothing at all, can you help me ??.

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you need to check the dock connector for dirt and debris/bent pins. you also need to check that the connector no4 is on properly. It may have been loose/not connected so when your new battery drained you are unable to recharge..hence won't turn on. No idea what zaabar is on about.. you should be able to fix this yourself, try small changes first before declaring logic board fault.

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Hey guys at First thanks for answer me,

Yes pollytintop my connector no4 is perfectlly connected, so how I can clean my dock connector ? Or I must buy another one ?, cause I checked my battery again and all the connectors. Do you think my problem is the dock connector ? (clean or a new one?)

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you need to work out whether charge is getting to the battery, sometimes when a battery is low it will not charge at all! Use a wall charger, not a pc as it gives more amperage. Now we try the easy/cheap solutions first. cleaning the part where you plug the phone in is a good start. use a small paint brush to see if there is any dirt on the pins which is stopping charge. Have you made sure that the screws near "don't remove"sticker are in tight enough (not too tight or you'll crack the board) to make contact with the battery prongs? measure the battery with a multimeter...should be about 3.7 on full charge, won't boot on less than 2? try putting old battery back in.. if it charges at same as it used to then we know your new battery is at fault and you need to send it back. If it won't charge either then you need to look at the dock connector again..

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You need to do the major servicing. If still unchanged, the logic board (DC-DC converter) is faulty. Like maintain a car, there are 2 type of services. Minor & Major services. Minor service just check or replace like battery and outer dust. In major service, must dismantled and check all part of a system, remove all internal dust, replace all half-faulty components and so on.

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Zaabar Zakaria can you explain what you mean by major servicing? Be more specific to help PhDLuesharon out. This is not a good answer....

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That's a better explanation so I removed -1, still not very specific advice though, and that's what is needed.

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Okay now where you explained it, what can PhDLuesharon do,to fix this particular problem? You should try and answer so that the person can actually try and fix hatever it is that is broken. Right now you are not helping with your answer.

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