iPhone 6 screen clicking/bad glue - a widespread problem?

Ugraded to iPhone 6 in early November and within a week I started to notice a distinct clicking noise while/immediately after touching the screen.

To clarify, this was a noise being created by some hardware anomoly (it happens when the device is off.)

To be clear, I have BABIED this phone in ways that my 4s would have dreamed of.

It has never been dropped, sat on, spilled on.. I don't take it into the bathroom during showers or expose it to any extreme temperatures or humidity of any kind, apart from unavoidable use in the winter. I don't breath on it the wrong way! .

After a very breif search, it turns out that a whole lot of people are experiencing this issue.

SO, after about 4 hours on the phone with Apple total, I've had the device serviced twice.

FIrst by a certified Apple tech in my area, who cleaned the device for particulate that might be causing the problem (which he had apparently encountered before)

Unfortunately, this did nothing to help the issue.

I then drove 2 hours to the nearest Apple store. I was told that they had also seen this issue, and that it potentially had something to do with bad glue used in the screen.

I Personally don't know what particular way the glue is used.

After another couple of hours of waiting, they decided to do a full screen replacement, which the tech claimed solved the issue "like 100% of the time"

About 3 days went by before the issue started again, this time in a completely different area of the screen and much louder.

I'm definitely going to return and ask for a replacement phone, and I doubt that Apple will give me trouble there.

I guess I'm just deeply confused by how/why Apple is using such terrible construction practices in these new phones.

I REALLY want to like this phone, but this clicking makes me feel like i'm using my old blackberry storm, which I still consider to be the most disgusting/deeply funny encounter with mobile phone technology that I've ever had..

seems like when one of the chief reasons to buy an iPhone is elegance in its hardware, Apple probbaly should have done at least A LITTLE BIT of testing before shipping millions of units.

Does Apple ever address or change any of these glaring flaws? If this has happened to me twice, considering how well I have treated this phone, it must be happening all over and in huge numbers. What's most dissapointing is that I loved my iPhone 4s, it had super good construction and I really did beat the **** out of it.

I took it into the snow, rain, into the sauna, tossed it around, sat on it all day and dropped it countless times without any problems at all.

I guess I'm not necessarily looking for advice, since I'm already planning on returning for a new iPhone 6

However, my fear is that this will just happen again to the replacement. just trying to get a scale of how widespread this issue is and if it's even worth my time - since it sounds like it might just happen again.