3G is a mobile communications standard that enables devices, such as mobile phones, to connect to the internet wirelessly.
The name 3G stands for third generation, meaning that it is the third generation of mobile telecommunications. It succeeded 2G, and it is being gradually overtaken by 4G technologies in terms of accessible regions.
Code division multiple access (CDMA) is essentially the foundation of 3G technologies. According to Qualcomm, CDMA offers increased voice capacity by several times and provides more efficient use of spectrum resources.
In addition, it increases battery life in mobile devices and has better security with CDMA encoding.
The roll out of 3G in the UK provided a massive boost to the mobile industry as it improved both reliability and UK coverage for voice calls and text messaging.