I have to admit that I thought this was baloney. But I just looked in the same spot on mine and there was a very
light film of oil right on the same spot. I'm a light user, like 4 days between charges light. I'm not as upset as you
though, I just wiped it up and will keep an eye on it. Out of curiosity, do you use the assistive light much?
Where did you buy the phone from? A retail store, Verizon store? The fluid looks as though it's seeping from the camera area. As the place the liquid is at is a hard plastic casing, when you wipe it away does it appear to still be hard plastic there or does it look degraded in any way? From your best estimates does it appear to be coming from the camera or just seeping up through the hard plastic?
Just to clarify, on most days jaydub5 I use my phone 5-10 hours of moderate to heavy gaming / browsing and my phone does not have a leaking liquid so I don't think it's fair to say that it is because you use the product moderately. There are many others that use their phone longer periods of time then both of us.
Looking at the teardown pictures I do not see anything remotely in that area that could be causing the problem, so if it is something from inside the phone it has to be coming from a different area and making its way up there.
I have to agree with New2u on this one. I also investigated and found nothing in/on/under the case at that location that seems even remotely capable of causing such a "viscous" liquid to seep through or collect/gather in the spot indicated. And with the same thing happening on 3 consecutive phones, I would normally say it's not possible however with the post from mscoul concurring, I don't wish to doubt you.
I suppose it is conceivable that in the process of manufacturing the plastic, a "pocket" of one or another component used in the manufacture of the case (this viscous liquid), could be left behind in the extruded and molded plastic case (though extremely unlikely), and somehow seep or leech out over time. What is highly suspicious is that by your account the apparent leeching of this viscous fluid is at exactly the same spot in all three instances. It's extremely unlikely that the pure chance of such an unmixed component would somehow find itself being in the exact same spot in the extrusion of the case in multiple extrusions. It's even more unlikely that you would be the unlucky recipient of three of those extremely rare instances in a row, while there were (save for mcsoul), virtually no other cases mentioned of this happening. Still, anything is possible I suppose.
I do know one thing...if it were me, I'd have given up on the specific phone that you're having problems with by now. I do wish you luck in a successful resolution.