Methods and device for preferably selecting a communication network which makes data service available

The claimed is a method for choosing cellular network a or more communication service for mobile communication device and method and device. Units (305) is sleeved by a mobile device operating scanning a geographic covering part supports the voice communication service of cellular network. , And one cellular network a mobile device for identifying to make the data communication service to wherein (335,405) can. Advantageously is device, and an to or selecting, and it so the data communication service can network so the data communication service can cellular network, and a to the register network. The data communication service may include for of the email communication service or the Internet access service. Optimized, cellular network according to GSM (global mobile communication system and) GPRS (general packet radio service) operation. In one embodiment, selective network, the network so the maximum value is available service. In one embodiment, a selective network, the network with service special weight value highest and.