ernal memory, add-on memory cards or even micro hard-disks. Many of the smartphones have Symbian, Palm, Android, Linux or mobile-Windows operating system and extended with built-in Web (and WAP) browsers for Internet access, supporting TCP/IP, HTTP, WAP, PPP, POP3&SMTP, and Java J2ME (or BREW) applets. Mobile Internet (accessed by cell phones, handhelds, and notebook computers) has as main attribute ubiquity (for "anywhere and anytime" connections-besides accessibility, richness, efficiency-usability, flexibility, security, reliability, interactiv- ity. Mobile wireless access reached very high data transmission speed (10 Mbits/s and up, like the actual LAN-s). It is now pervasive-multimodal (users can be simultaneously connected to several wireless access technologies-GSM/GPRS/ UMTS or WiFi/ZigBee and can seamlessly move between them). "Mobile land- scapes" are connected frameworks of wireless networks. Two recent, opposite, trends are more and more acute: More and more young adults, particularly those unemployed, those in low- skilled jobs or even homeless, have poor literacy and numeracy, and do not take part in learning after leaving school; to struggle against these evidences, modern learning no longer needs to be classroom-or course-bound but more and more in short flexible programs. On the other side, technology is endorsing e-Learning as a deeply personal act, offering on-demand and just-in-time support, allowing personal relation- ships with information, strengthening motivation, focusing attention, increas- ing performance; technology can engage learners by structuring and organizing information, by displaying and demonstrating procedures and operations, by simulating a range of conditions, immersing people in virtual environments, and providing safe practice opportunities. Service Delivery Platforms Mobile learning ("m-Learning") represents the next step in a long tradition of technology-mediated learning in ODL (open and distance learning), with computer- based-training (CBT), Web-based training (WBT),