Mineral Oil Between Glass and LCD
I've got what I'm pretty sure is a new one. My iPhone 4S (AT&T) was having problems muting the microphone as it believed a headset was plugged in. My solution was to deliver a short spray of WD-40 into the headphone jack, which solved the problem but caused a new one. Now there is a small blob of oil visible on top of the LCD. I'd like to know if it might be possible to clean it out by taking apart the phone, or if I would be better off replacing the whole front LCD/digitizer combo.
You can sort of see the blob in this photo, right in the middle of the screen. There is a very faint discoloration and darkening around it, leading up to the headphone jack where it started, but the blob in the middle is the worst. If I press hard I can get it to disperse but it quickly re-forms.
Hey there. This is really interesting. It is generally assumed that the LCD is fused to the front panel, but somehow, you managed to get schmutz inbetween the two panels. Either way, the two panels have to be replaced together, which is quite a bummer. iFixit has the guide and the part.
That is quite a misfortune that you have going there. Before replacing anything, try opening up the device and cleaning up any of the remaining WD-40.