TV’s news shows are often brought to you by a sponsor. Now, in the case of CNN , so too is its actual newsgathering.

As part of a bold ad deal, T-Mobile ’s logo will turn up often on screen when CNN reporters and correspondents deliver live reportage from outside the studio, a sign that the telecom giant’s nascent “SuperMobile” service, tailored for business users who want quick, reliable connections and privacy safeguards, has helped establish the connection between journalists and audience.

Such stuff is tricky in the news environment, and CNN will have to navigate the process carefully. What if T-Mobile becomes the center of a national story? Or what if the T-Mobile logo surfaces on screen while a correspondent is in the midst of covering a riot or outbreak of war? Others have tr

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