“Unlimited data” must mean exactly that in the United Kingdom if you hope to survive a challenge with British regulators over advertising and tariff claims.
Virgin Media thought itself clever offering “VIP” mobile customers two choices for service: £15 for a package that included 3GB of mobile data or £20 for “unlimited” data. Unlimited sounds like a great deal. For just $7.41 more, a customer could turn their stingy 3GB plan into unlimited data paradise. Or so one would think until navigating a nearly impenetrable thicket of fine print that suggested “you should expect speeds delivered up to 384kbps (3G). Actual speeds experienced may be higher or lower and will vary by device and location.”
Seven complainants discovered something interesting about their “unlimited data plan.” It sped along at an average speed of 6Mbps until they hit 3.5GB of usage during any billing cycle. After that, speeds were consistently reduced to 384kbps. They quickly learned Virgin had a secret throttling plan in place for their unlimited customers, couched in vague and misleading fine print that suggested customers should treat anything over 384kbps as a veritable gift from the mobile gods.
Why hide the fact Virgin has a “fair use policy” similar to many other wireless carriers that promise unlimited data only to throttle speeds after customers reach a certain amount of usage? Look again at Virgin’s pricing.
A customer could choose a £15 plan that included 3GB of usage or spend an extra £5 for what actually turns out to be just 500MB of regular speed data. If customers realized that, they would likely keep the £5 in their wallet. Instead, it went straight into Virgin’s bank account.
Virgin’s response is familiar to any customer who thought they bought an unlimited plan only to discover it cannot reasonably be used once an arbitrary limit is reached. The Advertising Standards Authority (ASA) summarized Virgin’s reply:
They said within all of their advertising, whenever they referred to “unlimited data” in connection with their mobile tariffs, they included an explanation within the small print that customers should expect speeds of up to 384kbit/s. They said the restriction imposed on customers was moderate in respect of the service being advertised.
They noted that the body copy of the ad did not make any reference to internet speeds, and said that Virgin Mobile customers were never prevented from accessing the internet, no matter how much data they used. They therefore maintained that access to data for any customer was entirely unlimited. They said, where a customer exceeded 3.5GB in any 30-day period, they would still be able to use the internet on their device at 3G speeds. They said that 2% of Virgin Media customers ever reached the limit in a 30-day period, which they considered was a tiny minority. They said that the customers using more than 3.5GB of data each month would be those customers who would be more aware of the advertised expected speed, and that the average consumer would therefore not have been misled.
That last sentence in particular did not amuse the regulators. In the United Kingdom, making a claim of “unlimited service” means that any limitations imposed on that service affecting speed or usability must be at most moderate and clearly disclosed. Virgin failed on both.
Average 3G speeds in Britain are now 6.1Mbps and that speed does not vary much between providers. The ASA ruled that slashing speeds to a fraction of 6Mbps went way beyond the rules.
“Given the speeds we understood consumers were likely to achieve before the [throttle], we considered that they were likely to notice the drop in speeds once the restriction was applied, as had a number of the complainants,” wrote the ASA. “We considered that a reduction in speed from an average we understood to be approximately 6 Mbit/s to 384 kbit/s once the limit was reached, was more than a moderate reduction. Because we considered the limitation imposed on speeds to be more than moderate, we concluded that the claim ‘unlimited data’ was misleading.”
As a result, Virgin Media was told not to claim that a service was ‘unlimited’ if the limitations that affected the speed or usage of the service were more than moderate.

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