3G Technology for Mobile Phones

Today I had a talk with my friend regarding the 3G phones.He is very much interested in buying phone of 3G.I was wondering why he is so eager to do so.3G is third-generation technology in the context of mobile phone standards.The most significant feature 3G gives us is the capacity to support greater numbers of voice and data customers.3G uses 5 MHz channel carrier width to deliver significantly higher data rates and increased capacity compared to 2G.It also allows transmission of 384 kbit/s for mobile systems and 2 Mbit/s for stationary systems.The 2G were built mainly for telephone calls and slow data transmissions.Due to the rapid changes in technology, these factors do not meet the requirements of modern wireless connections.
The standards are also changing.The International Telecommunication Union (ITU) has defined the demands for the 3G mobile networks with the IMT-2000 standard.The new system which works the above standard is UMTS(Universal Mobile Telecommunication System).The first new technology when going from GSM to UTMS is GPRS (General Packet Radio Service).It is the trigger to 3G service.The main Point is that the network connection is always on,so the subsriber is always online.From GPRS, the operator can directly go to UTMS or EDGE system.The advantage of EDGE system over UTMS is that , there is no need for new license , which help in re-usage of frequencies and antennas.The only issue is that the customer should go for EDGE terminal.
Even though 3G is succesfully implemented in Europe,Asia and North Africa , there are some issues that are debated by 3G providers and users such as high input frees for 3G service licenes , health aspects due to electromagnetic waves , expense of 3G phones, compatibility of 2G phones with 3G technology and lack of coverage.We , as users , will get affected by the high prices of 3G mobile service and also the internet access.So our mobile technology is booming ......but as long as it is not affordable , I cant think of buying it .