I've used an iPhone 6+ for a long time now. It usually rests in my back pocket and i've never managed to bend it near the speaker rocker or anywhere else. So dont listen to those idiots who are crying about bending their phones or are doing this on purpose - value the things that you buy.
Dissertations is a serious topic. Ordering it from someone is a huge risk. Although, if the circumstances are pushing you - this is the place to do it.