Watch the video in the link. Consumer reports tests the iphone 6 and iphone 6 plus with other similar competitors to its lab for stress testing. To measure how many pounds of force before bending permanently.
http://abc7.com/technology/consumer-reports-puts-iphone-6-bending-rumors-to-test/326540/
http://abc7.com/technology/consumer-reports-puts-iphone-6-bending-rumors-to-test/326540/