The present disclosure relates to a method performed by a network element in an operator network for assessing a quality of experience (QoE) of a service for a radio device. The method comprises receiving a first value of a key performance indicator (KPI) of the service from the radio device. The method also comprises receiving a second value of the KPI from the operator network serving the radio device. The method also comprises comparing the first and the second values of the KPI, and determining any deterioration of the QoE over the operator network, based on said comparing. The present disclosure also relates to a method of the radio device as well as to the network element and the radio device.