Fifth generation of iPhone. Repair of this device is straightforward, and requires screwdrivers, prying tools, and patience. GSM/CDMA / 16, 32, or 64 GB / Black or White.

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How to check ic with multimeter

Hello. Iam using iphone 4s. My problem is the phone automatic switch on after connect batery. I already change the on/off ribbon and a new battery. And my problem is the home button also cant use even i change the new one. I think it have problem with the ic or somethig that control all that. How to test the ic if its have problem with the ic? How to know and how to check the ic?

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@benjamen50 if the charging port is damage. Why the power button also cant work? Is the charging port can make the power button not working if the charging port damage?


@benjamen50 i already change the charging port to new one. Still same. I also try switch with my friends. But her board can use and nothing problem. I think my board ic have problem that cause the power button cant work and the home button also cant work and self switch on. How to know what is the problem. Wich ic shohld i check. And how to check the ic?


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1 Answer

Chosen Solution

A very common cause of turn on by itself is the charging port going bad, unplug the charging port cable in the phone, turn off phone and see if it turns itself on (try replug battery after too).

If it does not turn on by itself after that you know the charging port has gone bad and needs to be replaced.

Here is a guide and link to the replacement part if you need it:

iPhone 4S Dock Connector Replacement

iPhone 4S Dock Connector

iPhone 4S Dock Connector Image


iPhone 4S Dock Connector


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