The present disclosure relates to a telecommunication method for operating a telecommunication device being coupled to a digital telecommunication network. The telecommunication device has a processor, a display device and a memory with an application. The telecommunication device is connectable via the network to a backend server with access to a database comprising a plurality of datasets. The method has: sending an initializing data request to the backend server requesting a first number of the datasets from the database; in response to receiving an initializing data packet with the requested first number of the datasets and calculating a second number of the datasets to be requested by a second data request.