https://www.techradar.com/news/documents-show-that-apple-seemingly-knew-bendgate-could-happen

Apple’s iPhone range hasn’t been entirely devoid of problems over the years, with one of the most notorious being ‘Bendgate’ – the issue of iPhone 6 and iPhone 6 Plus handsets bending. 

It’s also an issue that it turns out Apple may have known about before selling the phones.