Cellphones and wearable devices are becoming increasingly popular among users of all ages. Cellphones can be used for a variety of purposes, such as making and receiving calls, sending and receiving text messages, browsing the internet, taking photos, and more. Wearable devices can be used for fitness tracking, such as counting steps and monitoring heart rate, playing music, and even monitoring sleep. Users can also access various apps to further customize their devices to suit their needs.