Abstract: In accordance with embodiments, there are provided mechanisms for wireless data transfer, and more particularly, to the search of mobile devices, establish connections, and exchange information between mobile devices using cellular communication channels as well as different modes of IEEE 802.11 standard sets. The methods of mobile device connections include establishing direct connections between devices and/or establishing connections via a special server (e.g., when direct connections between devices are impossible, impractical, and/or not convenient).