METHOD AND COMMUNICATION SYSTEM FOR RELIABLY DETECTING A THEFT USING IOT DEVICES

The invention relates to a method, a device and a communication system for detecting an alarm case, in particular a theft, of a user equipment in a communication system comprising the following steps: Attaching an loT-Device to a user equipment, wherein the loT-Device is configured to detect unauthorized actions; Setting up a communication connection between the loT-Device and a communication network; Triggering of an alarm signal in case of an unauthorized action on the loT-Device and/or the user device, Transmission of the alarm signal via the communication network to a server connected to the communication network, Increasing an effective antenna area of the loT-Device compared to an original effective antenna area of the loT-Device.