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.

2956 Questions View all

Broken chip on iPhone 4s logic board.


One of the customer brought an iphone 4s. The phone stills "searching", after battery replacement. The date is value, so unfortunately, I think, its an other problem this. I checked the logic board with microscope, and I saw this broken chip.

what is this 6 pins chip? Tomorow I will resolder this.

I marked with yellow.



Block Image

Answered! View the answer I have this problem too

Is this a good question?

Score 1
Add a comment

1 Answer

Chosen Solution

Iphone Service Szeged, that is U18_RF which is a Low-power 2-input AND gate 74AUP1G08GF in a SOT891 package, it is part of your baseband circuitry. The part is readily available at places like You can get the datasheet from here.

Was this answer helpful?

Score 1
Add a comment

Add your answer

Iphone Service Szeged will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 1

Past 30 Days: 3

All Time: 103