At Sun Valley retreat, Tim Cook tells reporter to upgrade her Samsung phone

The annual Sun Valley event, which has been held by investment bank Allen & Co. since 1983, brings together executives to discuss industry issues and talk deals. It was reportedly the birthplace of Comcast's 2011 acquisition of NBC Universal, for example.

Hoping to get a scoop on the next big deal, reporters are swarming the event, where Cook has been joined by Apple's head of iTunes and Internet service Eddy Cue, as Amazon chief Jeff Bezos, Google chairman Eric Schmidt, News Corp chief Rupert Murdoch and lots of other billionaires including Warren Buffett, Bill Gates and Mark Zuckerberg.

Bloomberg's "Hollywood reporter" Anousha Sakoui tweeted "Ok Apple's Tim cook just told me to upgrade my phone. It's a Samsung. I don't think I redeemed myself by saying I also had an iPhone," followed later by, "For the record Tim Cook is one of the nicest people I've met."

Getting more than upgrade advice out of the events attendees proved to be a much more difficult task. New York Post reporter Kaja Whitehouse tweeted, "Asked Harvey Weinstein to talk about his plans to sell his TV division. "You know we're under seal here," he replied. #sunvalley blues."

She did get a paparazzi photo of Apple's Cook walking in with Cue, however.

Wall Street Journal reporter Doug MacMillan tweeted out a picture of Cook being "chased" by CNN Money correspondent Cristina Alesci, noting "no watch on that wrist." The photo was retweeted by Wall Street Journal writer Daisuke Wakabayashi and Re/Code editor Arik Hesseldahl.

BusinessInsider's Jay Yarrow also cited the tweet in an all caps update, "TIM COOK IS AT SUN VALLEY," which prompted journalist Jason Del Rey of Re/Code to add "AND HIS BICEPS LOOK GREAT."

Invited attendees have also been warned about drones in the air trying to snoop out a story, according to a report by Bloomberg.