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Engadget is reporting that it has to do with the bonding agent and spots disappearing after fully evaporated;
Apple is using a bonding agent called Organofunctional Silane Z-6011 to bond the layers of glass. Apparently, Apple (or more likely Foxconn) is shipping these products so quickly that the evaporation process is not complete. However, after one or two days of use, especially with the screen on, will complete the evaporation process and the yellow "blotches" will disappear. How do I know? I was involved in pitching Z-6011 to Apple.
noticed this last night after using the phone for about 6 hours yesterday. I honestly thought mine was one in a million until I hopped on the forums. now that I see I am not alone, I will wait to find out from the rest what can happen as a result, rather than waste my time trying to fix a problem that looks like it might fix itself.
Got my iPhone 4 yesterday and after a couple hours of fiddling with settings, syncing, etc. I also noticed the faint orangish blobs at the bottom of my screen and across the bottom, thought it was just my eyesight going... then I managed to take some snapshots with my iPhone 3G and realized it wasn't my eyes... if it eventually disappears over time, I'm not going to worry. It doesn't interfere with anything visually (yet) as it's at the bottom. Unless it spreads...
Further, the veracity of the posting would not be difficult to prove
by an intrepid reporter -- just call up Dow Corning to ask whether
the color properties (they advertise "colorless" to "very pale yellow")
differ when wet or dry. From Google search, it's intriguing to find
tidbits about chemical structure, product information ala:
the existence of Chinese suppliers of "equivalent" compounds (hmm....):
APHA "yellowness scale" color testing
etc. Have at it, instant experts!
This might interest you:
I do not have one and have no idea about if this could be the problem, I just taught you could try to use it for 24-48h and see if it gets better
Wow, whilst I havent seen any blotches on my screen I am receiving a new iPhone tomorrow due to the fact there is dust underneath my screen.
Spoke to Apple UK today and the advisor was extremely helpful. He said for 600 bucks I should expect to receive a perfect phone. Theres one in the post. Excellent service by Apple. Fingers crossed that its ok.
As for the adhesive evaporation I would imagine that it is indeed the cause and hopefully for many in a few days time it will disappear.
Having heard from the poster here who knows about adhesive it I would take take it as a good sign that everything will come good in 48hrs.
The phone is phenomenal FWIW.
Hopefully it goes away by itself because I just got off the phone with support and they weren't too helpful.
They asked where my local UPS store was, put me on hold, came back with a repair order ID# and asked me "so are you all set?".
So I asked "umm so you'll be sending me a new one with instructions on sending this back" and the lady was like "no, you go to the ups store and give them that ID and they'll ship it back".
So I said I cannot be without a phone, I need a replacement so she said I should go to the Apple store and ask for an advanced replacement. I asked if that would be my new phone or if it was just temporary until mine is fixed and she said it's temporary.
I can't go to my local Apple store because it's too far and I'm not sending a brand new phone in for "repair" because who knows what I'll get back. I just want a brand new replacement and to send this one back and forget about it.
So hopefully that chemical is the issue and it goes away otherwise I'm stuck with orange blobs and disappointment and hoping it doesn't get worse over time.
I don't believe it's a temporary issue, at least in my case.
I received my phone on tuesday and it had the yellow spot right out of the box.
the phone was warm already after being inside the FedEx truck all day...
I believe it's heat related as the yellow spot is gone if i leave the phone alone for a while (overnight or for 30 minutes or so).
However it's back in its place, big and yellow, after i use the phone for 5 minutes or so.
I have an appointment with a genius tomorrow.