A virtual mobile number is a cloud-based mobile number that operates independently of physical mobile lines or SIM cards. It uses an internet connection to make and receive calls. It is a software-based mobile number that offers more flexibility and advanced features compared to traditional mobile systems. 

A virtual number can be used for businesses to separate work and personal communication, create a local presence in multiple regions, or offer toll-free support lines. A virtual mobile number is an adaptable solution for all business sizes.