Bluetcoth technology allows

Bluetooth is a short-range wireless communication standard designed for data exchange between electronic devices [t2][t7]. It operates using low-power radio waves in the 2.4 GHz ISM band, allowing devices like mobile phones, laptops, and accessories to connect without the need for physical cables [t1][t6]. Unlike infrared, it does not require a direct line-of-sight [t1]. While it is commonly used in mobile phones, its application extends to a wide variety of equipment including headphones, keyboards, and smart home systems [t2][t6]. It is specifically designed for cable replacement in personal area networks (PANs) to facilitate user mobility [t1]. Although some specialized cordless phones can bridge landlines to mobile phones via Bluetooth [t5], the technology's primary and defining function is the general wireless connection between diverse electronic equipments [t8]. Options involving only mobile phones or satellite television are incorrect as they represent either too narrow or entirely different communication technologies.

Sources

1. [1] https://gta-psg.georgia.gov/psg/bluetooth-so-06-004