Please help me identify these two missing IC chips?

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iPhone 4S

iPhone4S是第五代iPhone。网络制式为GSM/CDMA ，存储容量有8GB、16GB、32GB、64GB可选，机身颜色有黑色、白色可选。维修iPhone4S是容易的，需要耐心，用到的工具有螺丝刀、撬棒等。

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yingwang01 @duckysaysquack

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发帖于: 2013年7月7日

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Please help me identify these two missing IC chips?

I was trying to fix my power button but instead I think I bricked my phone. I think while trying to pry out the battery I broke off two IC chips. Currently my phone keeps searching for a signal and also the power button doesn't seem to work but I'm sure the button is functioning and properly plugged in.

Please see the pics:

http://i.imgur.com/Su4YlXI.jpg?1

http://i.imgur.com/J43HqxU.jpg

http://i.imgur.com/0VnEeu3.jpg

I've searched online and it seems the top (right) is a U18_RF. Can anyone confirm this?

However I have no idea what the second (blue thing that looks like a resister) is. Can anyone help? Also where may I find these parts? Any good tips on how to resolder these on? I've done some some soldering before however just nothing this small and was wondering if there are any useful tips for tiny circuitry that I am unaware of. Thank you!

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Heres a good pic showing the area of the components you damaged, sorry to say it doesn't offer much 4S Logic Bd.

由 Dan 完成的 2013年7月7日

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oldturkey03 @oldturkey03

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yingwang01, you got the U18_RF right. U17_RF is a SASLE1G58AA0F57 IC. The other component is U18_RF is a logic gate 74AUP1G08GF SOT891 package available right here. Here is the datasheet. U17_RF is a LGA IC and both components will require SMD soldering. This will give you a broad idea of how to solder those components. Hope this helps, good luck.

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Oldturkey03! Wow you are just...amazing! I posted on here kinda expecting people to toss around suggestions. I NEVER thought I'd get the EXACT answer nor a diagram and links to purchase! Just wow! Thank you! :)))

由 yingwang01 完成的 2013年7月8日

Also might I add, where might I find the U17_RF? Thanks!

由 yingwang01 完成的 2013年7月8日

yingwang01, I'll be looking out for that one. I know I've found it once before :-) Thank you for accepting my answer.

由 oldturkey03 完成的 2013年7月8日

Thanks a lot Oldturkey03. I see how you got 92.5k points!

由 yingwang01 完成的 2013年7月9日

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Heres a good pic showing the area of the components you damaged, sorry to say it doesn't offer much 4S Logic Bd. — Dan
Oldturkey03! Wow you are just...amazing! I posted on here kinda expecting people to toss around suggestions. I NEVER thought I'd get the EXACT answer nor a diagram and links to purchase! Just wow! Thank you! :))) — yingwang01
yingwang01, I'll be looking out for that one. I know I've found it once before :-) Thank you for accepting my answer. — oldturkey03

Vincent Monteil @vmonteil 声誉积分: 6.9千 31 16 20 · Answer 1 · 2013-07-08T03:52:47-07:00

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Vincent Monteil @vmonteil

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Looks like your antenna is no longer plugged in ! Try to fix it. Mabe did you lose the antenna cable. You can own a new one @ iFixit store.

Tell ys if it worked !

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I'm pretty sure the antenna is plugged in. The open port you are probably looking at is empty. The antenna is actually under the small black clip to the bottom left of the battery. Thanks for keeping a sharp eye though :)

由 yingwang01 完成的 2013年7月8日

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