We are not living in an era where people just see durability( like Nokia phones) while buying their cell phones.
People purchase after a lot of factors & style is the most common factor to buy the phone.
Look at your phone is incomplete without a back case to adorn it. It is not only used to create an attractive look to your phone but also protects your phone from getting damaged.
The style of cell phone should match the current trend & personality. The same applies when people buy Realme x back co