AT&T is a telecommunications company that offers wireless and internet services. They provide a variety of products and services including phones, wireless phone plans, internet packages, and accessories. They also cater to both individual customers and businesses. AT&T runs promotional deals such as trade-in offers for the latest tech devices, like the Samsung Galaxy S24 series, and bundles for services like AT&T Fiber and AT&T Wireless plans, which can result in monthly savings for customers. Additionally, AT&T has a retail presence with physical stores where customers can find products and services.