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

Question

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

crwdns2934591:0295crwdne2934591:0 crwdns2934593:0crwdne2934593:0

snowdog850 @snowdog850

crwdns2934065:0crwdne2934065:0: 13

2

1

crwdns2931729:0crwdne2931729:0: Maw 31, 2012

crwdns2933897:0crwdne2933897:0

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?

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0

crwdns2889612:0crwdne2889612:0 1

crwdns2944067:02crwdne2944067:0

Any help?

crwdns2934271:0Mha 10, 2012crwdnd2934271:0 snowdog850 crwdne2934271:0

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.

crwdns2934271:0Mha 10, 2012crwdnd2934271:0 snowdog850 crwdne2934271:0

crwdns2934285:0crwdne2934285:0

crwdns2933313:01crwdne2933313:0

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

score 1 · Answer 1 · 2012-08-10T08:48:49-07:00

crwdns2934057:0crwdne2934057:0

Brett Hartt @brett

crwdns2934065:0crwdne2934065:0: 127.8crwdns2936485:0crwdne2936485:0

178

123

275

crwdns2931729:0crwdne2931729:0: Mha 10, 2012

crwdns2933897:0crwdne2933897:0

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: