This is an excellent example of a musician's creative and witty response to an all too common annoyance.
A similar event at Avery Fisher Hall was reported in exquisite detail in the New York Times by Daniel J. Watkin on January 11.
Aptly entitled New York Philharmonic Interrupted by Chimes Mahler Never Intended, it begins:
The end of Mahler’s Ninth Symphony contains some of the most spiritual and peaceful music ever written. So when a cellphone began ringing – and ringing, ringing, ringing without cease – during a performance by the New York Philharmonic on Tuesday evening, Alan Gilbert did something conductors virtually never do. He stopped the performance.
And then things really got bizarre.