Home button + Power button doens't work after display replacement?

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"Hey mate,

Do the buttons work if you replace the original damaged screen? If so, you need to return the screen you purchased. I would hazard to guess that this could be the issue. If not, let me know.

Cheers."

"Anyone have any more info on this? I'm running into this problem as well...same symptoms and missing two IC's in the area shown in the posted picture. I'm game for trying to replace them, but I can't find any information on the specs for those IC's.

UPDATE:

I spent a lot of time last night digging around the web, and thought I'd post some info that may be helpful to folks in the future. First of all, a complete schematic of the IC's on the iPhone 5 logic board can be found here:

https://www.dropbox.com/s/0tmxaxb5n3x8em...

I have no idea how long that link will work, so no guarantees there. The password for the .RAR file that downloads is ""rn325"", without the quotes of course.

The three IC's highlighted by a previous poster are Q7, Q3, and U3 moving from left to right.

Q3 and Q7 seem to have something to do with power circuitry, so those specifically may have something to do with power button functionality, although it's not explicitly mentioned in the schematic. I don't happen to be missing those IC's, so I didn't dig into those any further.

I do happen to be missing U3, which definitely plays a role in the functionality of the home button and power button according to the schematic. I found a data sheet for the IC, which seems to be manufactured by NXP:

http://www.nxp.com/documents/data_sheet/...

I also happen to be missing the iC just to the right of U3, which is DZ101_RF. This IC has something to do with SIM card detection, which makes sense in my case because the phone never recognizes that it has no SIM card, nor will it read a SIM card when one is inserted. This part seems to be manufactured by Texas Instruments:

http://www.ti.com/lit/ug/slvu702/slvu702...

Now my problem is...how do I get my hands on these parts. Obviously, these are typically purchased in very large quantities, so I'm thinking that finding just one, or even a reasonable amount, is going to be impossible. The only option might be to find a non-functional iPhone 5 logic board somewhere and use these particular parts.

If anyone has any advice on where to find these replacement IC's, I would appreciate it very much!"

"hi, look de solution for U3:

http://i40.tinypic.com/hv3odw.jpg

short (1->6) and (3->4)

solution of DZ101_RF (SIM CARD):

http://i39.tinypic.com/6ssahu.jpg

:)

br.

Mario Yunis"

"Just to clarify this very confusing thread:-) the parts that everyone is referring to by their designators are as follows:

Q7 is manufacturer # RV1C002UN and it is a Nch 20V 150mA Small Signal MOSFET

Q3 is manufacturer # RV1C001ZP and it is a Pch -20V -100mA Small Signal MOSFET

U3 is manufacturer # 74AUP2G34GN and it is a Low-power dual buffer. That one is available [ http://www.nxp.com/products/logic/buffer...|from here.] Q3 and Q7 should be available from places like Mouser.com or Digikey.com. Be aware that Q7 and Q3 are a 0806 package. That means the size of the component is 2.0mm X1.6mmX1.6mm. Not an easy task to solder that. U3 is a SOT1115 package, measuring 0.9 x 1.0 x 0.35 mm with 0.3 mm pitch. So, unless one really knows how to solder and has the right tools, I would suggest to find somebody to do the replacement. Hope this helps, good luck"