Last year there was some people complaining about their iPhone 6 Plus bending in their pockets. There was a video showing how easily iPhone 6 plus was bending.
This year Apple used 7000 series Aluminum to build iPhone 6S shell and actual thickness of the devices are also increased to make sure that there is no more #bendgate.
Below is a video showing whether the new iPhone 6S plus is bending or not. The video is showing clearly that new iPhone 6S plus is way stronger than the previously available iPhone 6.
It looks like Apple took the #bendgate seriously and eliminated it from the iPhone 6S plus. Watch the video below and see yourself.