Smartphone connectivity refers to the various ways smartphones connect to the internet and other devices. This includes technologies like Wi-Fi, Bluetooth, and cellular networks. These connections allow users to access online services, share files, and communicate with others seamlessly. Additionally, smartphones can connect to accessories such as smartwatches and wireless headphones through Bluetooth. They also use cellular networks to make calls and send texts when not connected to Wi-Fi. Overall, smartphone connectivity enhances user experience by enabling constant communication and access to information.