Where do I clean if I got finger oil on my parts?

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iPhone 4 CDMA

Repair information and guides for the CDMA version of the fourth generation iPhone. Model: A1349 / 8, 16, or 32 GB storage capacity

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snowdog850 @snowdog850

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Posted: Jul 31, 2012

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Where do I clean if I got finger oil on my parts?

I had my iPhone into a shop for repairing when my power button failed. After I got it back, I have very bad bluetooth reception and almost non-existent WiFi. I remember that the shop did not use gloves. I took it back there and they are denying all responsibility.

So I assume that there's probably some finger oil on various parts and I've seen all of the suggestions on here about cleaning "all contacts" with a degreaser or Windex. But I don't know what "all contacts" are. Can someone help me out and point them out?

Answer this question I have this problem too

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Aug 10, 2012 by snowdog850

Thanks, Brett. I didn't check this until after I left work so I will try on Monday when I have access to my Pentalobe screwdriver.

Aug 10, 2012 by snowdog850

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Thanks, Brett. I didn't check this until after I left work so I will try on Monday when I have access to my Pentalobe screwdriver. — snowdog850

Brett Hartt @brett Rep: 127.8k 178 123 275 · Answer 1 · 2012-08-10T08:48:49-07:00

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Brett Hartt @brett

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Posted: Aug 10, 2012

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Hey Snowdog,

This is a pretty common problem, and you're correct about the finger oil causing bluetooth to fail.

There are a couple places that you should clean the contacts before re-assembly. While many of connectors in the iPhone use plug-and-socket connections, many just use spring pressure contacts. These pressure contacts are those which you should clean off. Here are a few:

Dock Connector Contacts
Near the vibration motor (double check this one, it is likely the culprit)
Grounding Pin

Use some isopropyl alcohol or some Windex on a Q-tip or microfiber cloth, and you should be golden.

Good luck, and let us know how it turns out.

Guide

iPhone 4 Power & Lock Button Replacement

Difficulty:

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15 - 30 minutes

Guide

iPhone 4 Verizon Power Button Replacement

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iPhone 4 CDMA

Where do I clean if I got finger oil on my parts?

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iPhone 4 Power & Lock Button Replacement

iPhone 4 Verizon Power Button Replacement

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