Volte is not a mobile phone brand, but a telecommunications technology. VoLTE, which stands for Voice over LTE, enables the integration of data and voice services on the 4G network. This means that users can smoothly operate their VoLTE phones on the 4G network while making calls without experiencing call drops. In addition to uninterrupted calls, VoLTE also offers faster call setup times and better voice quality. Compared to 2G and 3G voice calls, the voice quality can be improved by around 40%. Mobile phones, also known as cell phones or wireless phones, are portable telephone terminals that can be used in a wide range of areas. Originally, they were only used as communication tools and were commonly referred to as “brick phones” in China. Mobile phones originated from the military mobile phones manufactured by the Bell Labs in the United States in 1940, and the world’s first commercial mobile phone was invented by Martin Cooper, an engineer at Motorola, in 1973. Modern mobile phones, in addition to their typical calling functions, also include features such as cameras, GPS, and internet connectivity, collectively known as smartphones.