Do you know what a real Blackberry phone is?

The so-called Blackberry mobile phone is a kind of wireless handheld mail resolution terminal equipment launched by the Canadian Reserach In Motion (RIM for short). It is named "Blackberry" because it uses the standard QWERTY English keyboard and looks like the seeds on the surface of a strawberry. Meanwhile, in the later products, the function of a mobile phone was also added. Therefore, it is commonly referred to as "Blackberry mobile phone" at home.