HS-DPA stands for High-Speed Downlink Packet Access. It is a technology that makes your phone's internet connection faster so you can do things like watch videos and download things more quickly.
Think of it like a highway for data. Just like how some highways have more lanes and can handle more cars at once, HS-DPA adds more lanes to your phone's data highway so more data can pass through at once, making things faster.
So when you're streaming a video or downloading a big file, HS-DPA helps make sure everything arrives on your phone quickly so you don't have to wait as long.