The device speed test checks the speed between your smartphone, tablet, computer, or other device and the internet. You can run the test over a cellular network, a wired broadband connection, or your home Wi-Fi.

The equipment speed test checks the speed between your AT&T All-Fi Hub or Wi-Fi Gateway and our network. It reflects the speed coming into your home

Download speeds show how quickly data travels from the internet to your device. A higher download speed means you can stream videos, post images, download files, or access websites faster.

Upload speeds reflect how fast data travels from your device to the internet. A higher upload speed means you can post images or files to social media or other sites faster.

Your device speed varies. It depends on the number of devices you connect to Wi-Fi, how you use them, their age and type, and Wi-Fi signal strength.
 

Your speed results may vary based on many things, including but not limited to:

Ping, or latency, is the term used to describe the amount of time it takes for a connected device to send a message and get a response back. A shorter ping means a faster response from one connected device to another. Ping is important for things like online gaming, where quick reaction times are important.

Jitter is a measure of the ups and downs in the delay between sending and receiving data over a network connection. A high jitter can disrupt voice calls (VoIP), video conferencing, and online gaming. It can also lead to choppy audio, video lag, or disruptions.