Once a line exceeds 20 GB of data usage, that line will experienced reduced speeds. At that point, browsing speeds get reduced to a maximum of 1.5 Mbps download / 750 Kbps upload. At this speed, you might notice some lag when doing things that require a lot of data, like streaming video.

Once the next billing cycle starts, the data counter resets and the line will be back to full speed.

If the slower data is getting you down, connect to WiFi, where data is free and does not count toward your data usage.

This 20 GB speed reduction applies to all lines, no matter the data option or device.

You may also experience temporarily slower data speeds when the network is experiencing high levels of network congestion. This is most often based on where you are physically. For example, if you're in a crowded stadium, videos might buffer or pages could take a little longer to load. In practice, the vast majority of customers will probably not notice a difference in the network's performance. We manage the flow of data similarly to how other major U.S. carriers do. See more details about this.

By the Gig includes higher-quality cellular service in times of network congestion.

If you're on Unlimited, you've got some options for avoiding this temporary slowdown:

Connect to WiFi
Add HD Pass for $20/line per month