<P> The first full internet service on mobile phones was introduced by NTT DoCoMo in Japan in 1999 . </P> <P> As the use of 2G phones became more widespread and people began to use mobile phones in their daily lives, it became clear that demand for data (such as access to browse the internet) was growing . Further, experience from fixed broadband services showed there would also be an ever - increasing demand for greater data speeds . The 2G technology was nowhere near up to the job, so the industry began to work on the next generation of technology known as 3G . The main technological difference that distinguishes 3G technology from 2G technology is the use of packet switching rather than circuit switching for data transmission . In addition, the standardization process focused on requirements more than technology (2 Mbit / s maximum data rate indoors, 384 kbit / s outdoors, for example). </P> <P> Inevitably this led to many competing standards with different contenders pushing their own technologies, and the vision of a single unified worldwide standard looked far from reality . The standard 2G CDMA networks became 3G compliant with the adoption of Revision A to EV - DO, which made several additions to the protocol while retaining backwards compatibility: </P> <Ul> <Li> Introduction of several new forward link data rates that increase the maximum burst rate from 2.45 Mbit / s to 3.1 Mbit / s </Li> <Li> Protocols that would decrease connection establishment time </Li> <Li> Ability for more than one mobile to share the same time slot </Li> <Li> Introduction of QoS flags </Li> </Ul>

Where was the first mobile phone call made