What factory number was your iPhone produced in?

[econoar]

The week of year thread seems to be telling completely scattered results. We might as well see if the factory # tells us if there is a correlation between that and signal loss or yellow spots.

It's the first 2 digits of your serial #. Try to keep it in this format...

84

Signal Issues: Yes, complete drop with left palm on antenna
Yellow Spots: No

 

[Luminyx]

87

Signal Issues: Yes and no. When I first got it, I faced the issue. Now, I don't when I try to replicate it. I think I'm in an area with weaker signal, I face this problem.
Yellow Spots: No
Other Issues: 3G slows to a crawl a lot, or refuses to work. If I put it on Edge, Edge works.

 

[Wegmans]

87

Signal issues - Yes, and I do not have a case (thought I'd like a bumper)
Yellow Spots - No, thankfully

 

[Speedracer04]

84

Signal issues - None, Ive tried to replicate it with no signal loss. I live in a a pretty good signal area though
Yellow Spots - None

 

[artofdesign]

84

Signal Issues: Yes, complete drop with left palm on antenna
Yellow Spots: Yes, when new 2 near bottom: one gone now, 1 left

 

[woosah]

Search feature FTW...

https://forums.macrumors.com/threads/951530/