My G4 Plus is also bent! I only had it in my front pants pocket, not sat on it or done anything out of the ordinary.. I've been in touch with Motorola support but they say that their warranty doesn't cover physical damage, I argued that this is a design flaw but they aren't budging, they keep saying it's a "chargeable repair". I've been a loyal Moto G user since the 2nd Gen, I've never damaged a phone before (not even cracked a screen!) and certainly never bent one! So for them to imply I've not taken proper care of it is a slap in the face. In fact, here's the last email I received from them:-
"According to our warranty terms and conditions, physical damages are out of warranty regardless of the circumstances.
As this phone is bigger than the ones you had before, it is indeed more likely to get damaged if you leave it your pocket and sit on it for example. It is up to our repair centre to look at your phone and see if there is a manufacturer's fault or if it is proper physical damage that happened because you did not take proper care of the device.
Unfortunately, we cannot tell you in advance what this diagnosis will be since only our certified repair centre will see your phone. But as physical damage is never repaired in warranty, it is very likely that you will get a quote.
I understand your dicontent, but our warranty terms and conditions cannot be bypassed, I am truly sorry.
For any further assistance or information please do not hesitate to contact us, quoting your Customer Reference number."
I'm extremely disappointed and angry that I've wasted hundreds of pounds on the top-spec G4 Plus, only for it to basically be made of chocolate! If this is what they call product design and customer service then I will never buy Motorola/Lenovo anything ever again.