The new 'Pantech duo' global smart device which runs on Microsoft Corp's mobile phone operating system is displayed in its various dual-keyboard configurations as AT&T, Microsoft and Pantech announce the new crossover mobile phone availability at an AT&T retail store in New York, October 29, 2007.

BEIJING, March 28 (Xinhuanet) -- The biggest U.S. mobile service AT&T would launch mobile television services in May from Qualcomm's MediaFlo USA in an effort to bolster revenue from services other than phone calls, media reported Friday.

Spokesman Mark Siegel said AT&T will wait until May to offer the service as it is "a brand new service on a brand new network, and two brand new devices." The company plans to reveal its pricing at the time of its service launch.

AT&T said it would offer MediaFlo to users of the Vu phone from LG Electronics Inc and the Access from Samsung Electronics Co Ltd and plans two exclusive channels it did not name.

AT&T, which offers everything from music to web surfing to help bolster its revenue as phone call prices fall, had originally said it expected to offer the service by the end of 2007.

But some analysts said that mobile television is taking longer than some expected to take off partly because of weaker-than-expected consumer demand as the service does not blanket the entire country or work on all phones.

"There's still a question whether consumers are ready to watch a significant amount of TV on their handsets," said Stanford Group analyst Michael Nelson.