Yes, AT&T does sell smart home plugs, security doorbells/cameras and many other smart home accessories.
Many of the speakers and smart home devices on the AT&T website are designed to work with multiple devices and operating systems, including iOS and Android. However, it's always a good idea to check the product specifications to ensure compatibility with your specific devices.
AT&T offers a wide range of speakers and smart home devices on their website. These include portable speakers, soundbars, smart speakers, smart displays, smart thermostats, smart plugs, and more.