Public Knowledge readies complaint on mobile traffic throttling

The digital rights group plans a net neutrality complaint against the four largest US carriers

Digital rights group Public Knowledge will file net neutrality complaints against each of the four largest mobile carriers in the U.S. over their practice of throttling some traffic, in some cases on so-called unlimited data plans.

Public Knowledge on Wednesday sent letters to AT&T, Verizon Wireless, Sprint and T-Mobile USA, telling the carriers it plans to file traffic-throttling complaints at the U.S. Federal Communications Commission. The letters are the first step toward filing a formal complaint with the FCC.

The complaints will focus on practices at AT&T, Verizon and Sprint of throttling mobile data subscribers who pay for unlimited data plans and T-Mobile's practice of exempting network-speed-test app Ookla from throttling after subscribers reach their data cap, thus disguising their throttled speeds.

The carriers' practices violate some parts of the FCC net neutrality rules that survived a court challenge earlier this year, Public Knowledge said in a press release.

Sprint and Verizon violate the FCC's net neutrality transparency rule by failing to "meaningfully disclose which subscribers will be eligible for throttling," the group said.

AT&T, Sprint and Verizon violate the transparency rule by failing to disclose which areas of the network are congested and are subject to throttling, Public Knowledge said. T-Mobile violates the transparency rule by preventing throttled subscribers from determining the actual network speed available to them, it said.

"If the FCC's transparency rules mean anything, they must require carriers to let subscribers know why, when, and to what speed their connections might be throttled," Public Knowledge Vice President Michael Weinberg said in a statement.

"Today, Sprint and Verizon subscribers will not know if they are eligible for throttling until after they have crossed the usage threshold," he added. "AT&T, Sprint, and Verizon subscribers will not know they will be throttled until they are actually connected to a congested cell site. T-Mobile subscribers do not know the actual speed of their throttled connection. This is far from transparent."

Sprint and Verizon must publish monthly data thresholds showing when subscribers face throttling in order to comply with the FCC's transparency rule, and AT&T, Sprint and Verizon must publish real-time information about parts of their network that are congested enough to trigger throttling, Public Knowledge said.

The information must be available in open and accessible formats, the group said.

The practice of mobile data throttling came to the forefront after Verizon announced in July that it planned to slow the traffic of the top 5 percent of LTE data users.

After FCC Chairman Tom Wheeler questioned Verizon's decision, Verizon defended its decision, saying other carriers also engage in traffic throttling.

A representative of Sprint declined to comment on Public Knowledge's planned complaint. Representatives of the three other carriers didn't immediately respond to a request for comments.

Grant Gross covers technology and telecom policy in the U.S. government for The IDG News Service. Follow Grant on Twitter at GrantGross. Grant's email address is

Join the PC World newsletter!

Error: Please check your email address.

Tags sprinttelecommunicationregulationU.S. Federal Communications CommissionmobileMichael WeinberggovernmentT-Mobile USAPublic KnowledgeVerizon Wireless4gat&tTom Wheeler

Our Back to Business guide highlights the best products for you to boost your productivity at home, on the road, at the office, or in the classroom.

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Grant Gross

IDG News Service
Show Comments

Cool Tech

D-Link TAIPAN AC3200 Ultra Wi-Fi Modem Router (DSL-4320L)

Learn more >

D-Link PowerLine AV2 2000 Gigabit Network Kit

Learn more >

Crucial® BX200 SATA 2.5” 7mm (with 9.5mm adapter) Internal Solid State Drive

Learn more >

Lexar® Professional 1000x microSDHC™/microSDXC™ UHS-II cards

Learn more >

Xiro Drone Xplorer V -3 Axis Gimbal & 1080p Full HD 14MP Camera

Learn more >

ASUS ROG Swift PG279Q – Reign beyond virtual world

Learn more >

Gadgets & Things

Lexar® Professional 1000x microSDHC™/microSDXC™ UHS-II cards

Learn more >


Learn more >

Lexar Professional 2000x SDHC™/SDXC™ UHS-II cards

Learn more >

Family Friendly

Lexar® Professional 1000x microSDHC™/microSDXC™ UHS-II cards

Learn more >

ASUS VivoPC VM62 - Incredibly Powerful, Unbelievably Small

Learn more >

Lexar Professional 2000x SDHC™/SDXC™ UHS-II cards

Learn more >

Stocking Stuffer

Lexar® Professional 1000x microSDHC™/microSDXC™ UHS-II cards

Learn more >

Lexar Professional 2000x SDHC™/SDXC™ UHS-II cards

Learn more >

Christmas Gift Guide

Click for more ›

Most Popular Reviews

Best Deals on PC World

Latest News Articles


GGG Evaluation Team

Kathy Cassidy


First impression on unpacking the Q702 test unit was the solid feel and clean, minimalist styling.

Anthony Grifoni


For work use, Microsoft Word and Excel programs pre-installed on the device are adequate for preparing short documents.

Steph Mundell


The Fujitsu LifeBook UH574 allowed for great mobility without being obnoxiously heavy or clunky. Its twelve hours of battery life did not disappoint.

Andrew Mitsi


The screen was particularly good. It is bright and visible from most angles, however heat is an issue, particularly around the Windows button on the front, and on the back where the battery housing is located.

Simon Harriott


My first impression after unboxing the Q702 is that it is a nice looking unit. Styling is somewhat minimalist but very effective. The tablet part, once detached, has a nice weight, and no buttons or switches are located in awkward or intrusive positions.


Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?