The Advertising Standards Agency (ASA) has asked 3UK to remove an ad which claims that the mobile operator offers the best network for smartphones and mobile broadband as such claims cannot be substantiated.

The regional press ad stated: "Don’t just take our word for it. We’re rated No.1 network for mobile Internet speed and value by smartphone users."

In support, the ad mentioned referred a YouGov report "Smartphone, mobile internet, experience report wave 4 (Sept 10)".

However, a complainant challenged the ad was misleading as its comparison with competitors could not be verified.

The UK advertising watchdog upheld the complaint. The ASA reasoned that the ad could mislead a reader to believe that a comparison with competitors had taken place.

The ASA also noted that citing the YouGov report was inappropriate, as it has yet to be made public.