Although Samsung was an Oscars sponsor, host Ellen DeGeneres was tweeting backstage from an iPhone, as seen at right.

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Ellen DeGeneres tweeted pics via phone from Oscars sponsor Samsung

But backstage, DeGeneres was also tweeting from an iPhone

CNN  — 

Ellen DeGeneres, #Busted.

The Academy Award host broke Twitter with her Oscar-night group selfie using a mobile phone built by Samsung, a major sponsor of Hollywood’s big night. It generated a record 2.7 million retweets – a coup for her, the Oscars telecast and the Korean electronics maker.

But some sharp-eyed observers noticed something a bit different when viewing the talk-show host’s backstage tweets. Several of them, such as a photo of DeGeneres with actor Channing Tatum, were sent not from a Samsung Galaxy handset but a rival iPhone.