When you put your phone in your pocket face the glass towards your body. The sample I am basing this advice on is 1) the pictures of the recently bent 6+'s 2) google image searching "bent iphone" which turned up dozens of previous generation bent iphones. Every single instance I have been able to find has the iphones bending the same way, edges bent away from the glass, and usually at the buttons (the weak point in the aluminum), but the glass is left intact because it doesn't bend nearly as easily and has no weak point. So to use this to your advantage what you want to do is put the glass, which is the more rigid side, closer to your body to better resist the bending force exerted by your body. My theory is that this should greatly reduce your (already low) chance of bending your phone. I do this already because it protects the glass from banging into things just walking around and there is no downside so consider it for extra insurance against bending for your phone. I obviously don't have a QA lab and dozens of iPhones to scientifically test this, but I think there is good support for my recommendation based on the overwhelming way all the bent iphone examples have bent so far.