Service quality relating to multimedia content is measured in a mobile wireless telecommunication network by comparing, in a mobile wireless device, a received test media clip with a pre-stored sample media clip. The network transmits a test media clip, which is received by one or more mobile wireless devices. A device that receives the test media clip compares it with a sample media clip stored in mobile wireless device memory to detect differences between characteristics of the received test media clip and sample media clip. The device produces a result in response to detected differences. The result is provided to the network's service quality management function.