(Telecompaper) The GSMA said that Deutsche Telekom and Vodafone Group have successfully completed the first international roaming trial in Europe using licensed NB-IoT technology. GSMA said the service will ensure seamless coverage and service continuity for millions of connections using Low Power Wide Area (LPWA) networks. The trial was performed using global Sims from Deutsche Telekom on Vodafone Spain's network and global Vodafone Sims on T-Mobile Austria's network and commercial NB-IoT modules.