The service is monitored around the clock. In the event of a disturbance that affects several customers, error analysis and action plans are put into effect by an emergency team 24/7/365.
Planned maintenance and service are scheduled for when they will have the least impact on customers. Measures are taken promptly and in a way that minimizes disruptions as much as possible. Underlying 2G, 3G, and 4G networks are maintained by the network owners in accordance with their own routines.