Galaxy M31’s design hasn’t changed much from the Galaxy M30s. The phone’s back is made of a hard-coated polycarbonate shell. In simple language, it’s “plastic” but that does not mean the phone is flimsy and will break within a few days. The Galaxy M31 feels well-built and sturdy; I think the reason for using a plastic shell has something to do with a 6000mAh battery inside.
The design is not a head-turner. But I am ready to accept a phone that puts more emphasis on practicality.
I got the review unit in black but you can buy the phone in blue as well. However, the black version is a fingerprint magnet and you will need to buy a good case.