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Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White. This page aims to help users troubleshoot, fix, and seek help for the iPhone 4.

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Missing small white chip from the motherboard. No wifi and weak signal

Hello there. I have opened my iphone because after drop down i've lost my wifi at all and the GSM signal is very poor and it's loosing it without or with 3G connection. I've noticed that a small tiny white chip is missing from the motherboard upside near to the golden wifi antenna.

Can you tell me the name of the chip so I can buy it from somewhere and to fix it

Here is an image

http://s24.postimage.org/9qpnjb07p/IMG_0...

you can see it down to the golden antenna

Answered! View the answer I have this problem too

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I bet this is the same part as on this question. Missing small white chip or inductor on the motherboard. and yes , the part is available.

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I'm not sure there is a way to buy that type of chip other then get another phone and swap the part, hoping the copper contacts are undamaged and can be soldered on with no faulty connections. i recommend a hot air rework station for this type of work as a soldering iron wont work.

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@qpunk, the part that Dimitris is looking for is the L18_RF Diplexer LFD181G57DPFC087 from Murata.

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where do you find the parts names and info? good work btw

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Dimitris, not sure if this is a duplicate question, just a different user name. Anyhow, the part that you are looking for is the L18_RF Diplexer LFD181G57DPFC087 from Murata. qpunk is absolutely right, you should definitely use a rework station to replace it. It is possible to do it with a fine soldering tip, but will require good skills. You asked where it is on the other phones, So I answered your question to attach a few images to point them out to you.

Block Image

Here is the diplexer on a 3G

the 3G use a different diplexer. Here it is a Murata LFD181G57DPGC092 reference designator L25_RF. You will have to check the datasheets on the differences in value

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and here on a 3GS. Hope this helps to clarify the two previous answers.

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If you have a spare iphone 3g or 3gs logic board, you can take that chip out and solder it on to the iphone 4. It is used for wifi.

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can you show me with a picture where i can find this chip ?

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Looks like someone has already beat me to it lol but yes just look at the pictures posted thats the same chip I believe

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