The phrase "plastic casing" refers to a cover or container made of a type of plastic material. It is used to protect or enclose something, like an electronic device or a product. Full definition
In the meantime, it is rumored to adopt 2.5 D curved glass and round body design, and the phone is rumored to come with plastic case with metal frame at the back. (myfixguide.com)
The phone is packed in a hard plastic case which is much larger than boxes for other phones. (zdnet.com)
They are all stored inside a clear plastic case with easy - to - use snap closures. (geekwrapped.com)