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3G, or the third generation of mobile network technology, is a standard for mobile communications that succeeded 2G. Introduced in the early 2000s, 3G represented a significant improvement over previous generations, offering higher data transmission speeds and the ability to use mobile internet data services for web browsing, email, and audio and video streaming. The main technologies associated with 3G include UMTS (Universal Mobile Telecommunications System) and CDMA2000.

In everyday life, 3G allowed users to access the internet more smoothly compared to 2G, opening the door to new modes of communication and entertainment. For example, it enabled mobile web browsing, sending emails with large attachments, and using apps that require a stable internet connection. Additionally, with 3G, users could make video calls, use more advanced map and GPS services, and access the first music streaming services.

In Switzerland, 3G played a crucial role in improving mobile connectivity during its introduction and adoption. Major mobile network operators like Swisscom, Sunrise, and Salt implemented 3G networks on a large scale, ensuring wide and reliable coverage. Although 3G is now being phased out in favor of more advanced technologies like 4G and 5G, it remains an important backup network, especially in rural or less densely populated areas. In Switzerland, 3G networks are still used to ensure that everyone has access to basic telephony and data services, helping to bridge the digital divide, although it is expected to be phased out by the end of 2025.

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