Here's why it's a bad idea to put your phone's screen up on live TV

Sometimes the thought of sabotaging your friend's live TV appearance proves too difficult to resist.

Ted Kravitz, a pit lane reporter for Sky Sports' Formula 1 coverage, was at the Brazilian Grand Prix on Sunday.

Kravitz was showing off pictures of New Zealand driver Brendon Hartley as a child on his phone in his segment Ted's Notebook, explaining why Hartley had chosen the number 28 for his car.

But someone couldn't resist messing with Kravitz, with a contact called "MSY Mob" causing an almighty cock-up with a well timed text message.

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Kravitz swiftly moved his phone out of shot, acknowledging what had just happened. "It's always a bit of risk when you do this because people text you with certain messages," he said.

The reporter occasionally uses his phone in his segment Ted's Notebook to show photos, but it's safe to say he'll think twice about doing it -- or at least switch his phone to aeroplane mode.

Because yes, people saw it:

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