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Shuts down, no signal and battery problems only with sim card inserted

I have 3 iPhones with the same symptom. Battery goes down quickly, shuts down or no signal ONLY when you insert de SIM card. I've tested all these 3 iPhones with no SIM card, and they don't shut down, no baterry drain. I've tested with several SIMs cards that work perfectly in other devices (I mean other iPhones)

Beantwortet! Antwort anzeigen Ich habe das gleiche Problem

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I also concluded the same. In my case it seem batteries got faulty as I moved to 110V country from 220V and used a voltage transformer in front of adapter to charge the phone. It did something bad with the batteries. Though phone works fine when on charging. It shuts down only when I try to place a call. Thanks for this ans

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Gewählte Lösung

in my opinion - there are 2 possible problems (if fluid damages are ruled out in the first place)

1, the batteries are extremely weak - as soon as the phone uses the mobile phone part - the battery crashes

2, the Skyworks GSM/Edge Power amplifier (SKY77340) is faulty

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(top right on the picture)

i use an infra red thermometer to find those faulty parts

but as i said, those two things are pretty common failures on other phones

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+ good answer. I couldn't find anything for those bizarre symptoms.

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really good answer. I don know about this infra red thermometer, and it seems to be a useful tool. Where I can found it, and how do I use it?

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²majesty - i worked as technician in a nokia store and was self employed for years in that business. ²macpatagon - search ebay for infrared thermometer - but you can use the cheapest one for 2 or 3$ - it's not important to have the exact temperature - important is the difference. using it is simple, press a button and hold it directly over the parts - if you hold it over every area of the board - you can find faulty ic's extremely fast

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@ Markus: I can see that. You have to have hands on experience to troubleshoot bizarre cases like this one.

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I am having the same problem with all the nokia phones I have, with one particular sim. Even with those phones that work fine with other sims. - Help!

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the sim most likely is faulty or simply incompatible with your phones

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Flavio wird auf ewig dankbar sein.
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