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iPhone de cuarta generación. La reparación es sencilla, pero el cristal frontal y la pantalla LCD deben ser reemplazados como una unidad. GSM / 8, 16, o 32 GB de capacidad / Modelo A1332 / Blanco y Negro.

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How do you fix the Blue Inductor Coil on iPhone 4?

ok so i have an iphone 4 and after it was droped the screen broke and my wifi was weaker so i pland to fix the sreen and just redo all the glass as red and the fram as black and well replacing all that i put a new wifi antenna in to see if that would fix the weak wifi well i did not, and now just this week i now have no phone service and still weak wifi, i looked up online and some one said that the blue coil by the wifi and battery plug could have broke, i looked and i think it may be i found the part i need to fix it online. is there any way you can put something up to show how to replace it, thank you

Contestado! Ver respuesta Yo también tengo este problema

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Hey guys, this awnser is not correct... This blue filter is for cell phone receive not wifi, wifi chip and traces are on the top side of the motherboard.

Greetings

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Hello!

I have an iPhone 4 it fell down and

Display is broken.

And sim signal is not working it said

No service

Then some one told me to check

Blue coil top of ringer

It would be broken

I see it

Was broken and I don't know how to fix it please tell me how to fix it

Thank you very much.

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When you have not blue coil for change .you can remove the blue coil from the board and connect the two points together with the solder .it work 100 % in iphone4 without problem

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I usually just create a jumper with soldering iron and it works.

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@ Johnkustis, do you just basically bypass the coil all together? Is that not bad? Or do you just temporally bypass it to see if the coil is at fault?

Sounds like mine has gone too, any help would be awesome.

Thanks,

Chris.

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Ok thanks for the replies. I'm gonna go ahead and change the coil.

Just a heads up now, Those people selling the replacement coils are robbing people blind.

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Hey Chris sorry for a late reply did not see your post. It is perfectly fine, I personally do it all the time for my customers.

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I just dabbed a small blob of conductive silver with a circuit pen across where the coil was and it works perfect now.

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you can replace it with a new blue iphone coil that will fix the problem

you can buy a new blue coil here for the repair

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cyberdoctormd, be careful with posting your URL all over. Could be looked upon as spam. Place the URL into your profile and link your answers to that. Many people that answer questions, have their own business but do not use this forum to increase their business

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update video tutorial on how to change the coil with hot air gun on youtube :]

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The answer to your questions, how to fix the blue inductor coil causing a signal problem, the solution is easy we have repaired many with a 100% success rate. If you look at the signal antenna which you plug the cable into, simply run a wire from the left side bridge it to the right side point on the blue coil and follow it all the way to the furthest (right) component on the top left side. This will act as a 'bypass route' and your signal will start to work again.

All it takes is a bit of micro-soldering knowledge and some 0.1mm wire and basing soldering equipment. This will fix your problem guaranteed, providing it was the missing blue coil that caused your signal issue in the first place.

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Solution: If you don't have soldering equipment just like me, basically find a very small metal as small as the blue coil and stick it to a very small double sided adhesive and put it where the blue coil should be put. I did it and i got FUUUUULLL bars and the customer's phone was back to life. Good luck!

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Until they drop it ---I hope you didn't charge them, this is really poor form for the repair industry. If you can't repair it, please just advise the customer to find a shop that can microsolder :(

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