What is 4G?
4G stands for fourth generation. It follows 2G and 3G and is the fourth generation in mobile phone technology and broadband capability. In the past, 2G worked great for making phone calls and sending text messages, while 3G gave us better and faster access to the internet using mobile phones.
What does 4G do?
The 4G technology will make internet surfing using mobile devices faster, close to the speed that you experience when you’re using your home internet. It is ideal to use when video streaming, mapping or browsing social media sites. It can shorten the downloading of a video from 20 minutes when using 3G to 3 minutes on 4G.
Here’s how it works: 4G uses Orthogonal Frequency-Division Multiplexing (OFDM), the same technology used in Wi-Fi, ADSL broadband, digital TV and radio, which in effect makes 4G work faster then 3G. OFDM squeezes more data into the same number of radio frequency, and reduces latency and interference.
4G also uses MIMO or multiple input and multiple output to allow for a better communication performance. Both the transmitter and receiver use multiple antenna arrays that improves internet speed. This means more data is transferred but there is no additional bandwidth or power required.
In the UK, Ofcom designed a plan that will allow at least 99% of subscribers in all villages, towns and cities in the country to have indoor coverage access to 4G. Because the requirement is indoor network access, which is easier to meet, providers are likely to provide the same service outdoors to over 99% of UK phone users.
However, although 4G is now available in many countries, your 4G phone might not work in some places because different countries use different frequencies to operate 4G. If this happens, you can switch to 3G while travelling.
Callsure can help you if you have more questions about what is 4G and how it works with any of our virtual number packages.