AT&T 25 Mbps service offers download speeds up to 25 megabits per second and upload speeds of up to 5 megabits per second. A connection speed at this level will support two people online at the same time and up to about five devices. You can stream in HD on one, or possibly two devices at the same time, as well as scroll through social media, handle emails, do online banking and other normal tasks. It’s not enough speed for multiplayer online gaming, and isn’t ideal for streaming in 4K if there is anyone else online. A speed of 25 Mbps is the minimum speed that meets the standards of broadband internet. It's certainly enough for routine light tasks online and will even let you work from home and attend a Zoom session.