Consumers report wide variation in the speed and reliability of AT&T's U-verse Internet service. AT&T's own online speed test appears to show download speeds slightly higher than other speed testing services.
AT&T uses Speedtest.net to provide upload and download speed measurements. Users in many markets complain that the data derived from Speedtest.net is inflated, and averages taken from several other speed testing websites supports this claim. Additionally, AT&T does not guarantee specific Internet speeds with its service. The company claims that equipment, telephone lines and other variables beyond its control affect the speed and quality of the service it provides.