evision with the development from mobile telephony to mobile data/Internet/multimedia with video sequences, games, photography and multimedia mail. The change is considered about the same but will take some time. Instead of home working, socializing is becoming more popular. Lessons Learnt from I-mode See also section 5.3.6 on SMS messaging and section 5.8 on bandwidth requirements I-mode shows us that information exchange between users is important. E-mail is the most used part of I-mode. Content created by other end users is very valuable. MMS has the potential to become big, as well as instant messaging. Keyboards are important to enter more information. It is important to learn more about end users, for example mobile Internet users and how they use the services. The youth segment is very important. They have been leading the way for mobile Internet SO far (SMS, I-mode). Interactive communication is preferred rather than retrieval of information. Application Platforms for Large Groups Instead of targeting users with a number of single services, application platforms can be designed for various purposes and target groups. An example could be a virtual society platform. The supported activities could for example be purchasing (e-commerce, B2C, retail fashion, retail grocery store, car dealer, food on line, mail order clothing store), social services (childcare, school, public healthcare, social security), transport services (public transportation, booking office), housing rental agency (Yellow Pages), leisure (golf course, sports club) and enjoyment (cinemas, gambling, games and betting, TV on demand). The applications are reached through a portal for the selection of a group of services. Evidently, the growing range of services needs more and more application support servers, such as bank servers, education servers, advertising servers, game servers etc. Service Packages Service or application providers can package services focused on specific profitable user segments. The same service, e.g. e-mail, can of cou