Originally Posted by mushtafa
Right, so got my original m8 around 6-7 weeks ago, and had it replaced a few days ago. I'm sure I've noticed a few differences.
1. New phone has small sticker on the left hand side at the bottom saying made in China.
2. New phone appears to have a brighter LED notification light.
3. On the new phone, I can feel the HTC letters on the back, I never noticed this with the original.
4. Not 100% sure, but I think the screen is brighter/clearer.
No idea about the Made in China sticker..don't have one. But AFAIK they are made in both China and Taiwan.
The screens are confirmed as being from different manufacturers and therefore having different colors etc. More info in a thread here somewhere..search for it :P
Also the gunmetal color version has two different versions with small variations..I think the lettering was one of the differences noted but not sure.
As for the LED, I don't think so but beware that the light level seems to differ a lot according to which notification is being used. For instance the battery charging/low battery is quite dim, while the sms/email notification lights it up a lot more.