We can define a smartphone as a mobile phone that is capable of running a variety of software applications to perform various functions. These are either preloaded or downloaded from the Internet and can be installed on many smartphones.
Smartphones have become a significant part of the communications system. The quantity and quality of mobile services in developed countries are becoming very high. Smartphones are often used to access the Internet and perform various mobile services, such as text messaging, e-mail, Internet browsing, etc.