LG: The G3 would have been $300 more expensive if it were made of metal

These weren't LG's only concerns, however. Mr. Lee claims that plastic is the only material that allowed him "to maintain the compactness of this phone". Indeed, the LG G3's screen-to-size ratio is quite impressive - the phone manages to squeeze a 5.5-inch QHD display in a body that isn't significantly larger than what competing phones with smaller displays, such as the Samsung Galaxy S5 or Sony Xperia Z2, have to offer.

LG's design chief has some other reservations towards metal: “If I had applied metal to the G3, it would be much bulkier in the bezels and in all four directions. It would be very big and very heavy. It would be really slippery as well.” - he said. However, LG remains open for the inclusion of materials other than plastic: “In order to show off the luxurious nature of the phone, maybe we could have applied some high-end metal on the side or on the back.” - explained Lee. Well, maybe next time, then?

source: Trusted Reviews