"Don't answer; let it ring," the acclaimed pianist cried out.
The concert was held in the Gothenburg Concert Hall on October 23rd, 2013. The following day, the Gothenburg Symphony Orchestra published a clip of the scene on YouTube. In addition to footage from inside the concert hall, the video also includes comments from Zacharias on what it's like to have a concert interrupted.
Watch the embarrassing scene below. But don't forget to shut off your mobile phone first.