Speaking of slippery phones... I recently bought an Xperia Z3 which is the first phone I've had that has a glass back along with a glass front. As a result, th

Speaking of slippery phones... I recently bought an Xperia Z3 which is the first phone I've had that has a glass back along with a glass front. As a result, the phone is extremely "slippery". I have always had a habit of setting my phone down on top of my wallet. With the Z3, I was noticing that within a minute or two the phone would slowly but surely slide off the wallet and onto the desk. I even noticed this a couple of times on surfaces that were quite flat, including if I set it on top of the cardboard box it came in! Anyway, this all came to a head about 3 weeks after I purchased the phone. It slid off my wallet and onto the floor and the front screen shattered. The screen was $275 to replace, but I have found the replacement screen to be of lesser quality and am now having minor audio issues as well. Disappointing so early into the ownership cycle for a device. In any event, I am now using a case for the phone, which seems to be an absolute necessity for this device if you want it to not slide off of anything you put it on. The choice of the rear glass cover seems like it offers a large practical disadvantage for an aesthetic advantage that most people wouldn't care about.