Today Alcatel-Lucent and Samsung unveiled at Mobile World Congress an optimized device-plus-infrastructure solution that will enable end-users to have seamless access to their voice and data services when switching between GSM/EDGE and WiMAX networks. On the exhibition show floor the two are showcasing live demonstrations of an optimized end-to-end solution for dual-mode, which tightly integrates the dual-mode PDA and network equipment from Alcatel-Lucent.