7. • more than 80 commercial networks
worldwide
– in 40 countries
•Alone about 60 networks in Europe
– 3/4 of the planned frequency blocks in
commercial use
8. user In million
50
40
30
20 user
10
0
2002 2003 2004 2005
9.
10. Various risks for 3G business
•Attacks on the integrity of data exchange
– tapping into mailboxes or using telephone
services at
someone else’s expense
• Electromagnetic pollution may be harmful to
health
– telcos should communicate potential health
risks and the
counter-measures taken
• Political intervention
• Low acceptance and limited willingness to pay
– value-added mobile services failed
– besides ringtones, games, gambling
11. 3.5generation
-Evaluated version of 3G
4 generation
data transefer bit rate will extend up to
100mb/s.