Wi-Fi has two frequency bands you can use: 2.4 GHz and 5 GHz.
5 GHz Wi-Fi is great. It offers more non-overlapping channels, which makes it much less congested. It’s excellent in places with a lot of Wi-Fi congestion, such as apartment buildings where every apartment has its own router and Wi-Fi network. 5 GHz Wi-Fi is also faster than 2.4 GHz Wi-Fi. But, despite those slower speeds and increased congestion, 2.4 GHz Wi-Fi still has its advantages. 2.4 GHz covers a larger area than 5 GHz and is better at going through walls thanks to its longer radio waves. Those shorter 5 GHz radio waves make for a faster connection, but they can’t cover as much ground.
If you have even a reasonably modern router, it’s probably a dual-band router that supports both 5 GHz and 2.4 GHz Wi-Fi at the same time.
We’ve seen people use the term “5G Wi-Fi” to refer to 5 GHz Wi-Fi, but that’s incorrect. They mean “5GHz Wi-Fi.”
To make matters a bit more confusing, people sometimes name their networks things like “My Network” and “My Network – 5G”. That’s pretty misleading, but it wasn’t too confusing before 5G came along. Here, “5G” is just short for “5 GHz.”
This is because Wi-Fi routers that support 5 GHz Wi-Fi can be configured in multiple different ways. These routers can host both a 2.4 GHz and 5 GHz network at once, which is useful for older devices that only support 2.4 GHz, or larger areas where devices might move out of 5 GHz range but still be within 2.4 GHz range.
If both Wi-Fi networks are named the same thing—for example, if both your 2.4 GHz and 5 GHz networks are named “My Network”—each connected smartphone, laptop, or other device will automatically switch between the networks, choosing the 5 GHz network and dropping to the 2.4 GHz network when necessary. That’s the goal, anyway. In reality, many devices don’t do this properly and may just connect to the 2.4 GHz network, or they may try to connect to the 5 GHz network and fail.
That’s why people often configure their routers to have two separate Wi-Fi network names. One could be named something like “My Network – 2.4 GHz” and another something like “My Network – 5 GHz.” Both are hosted by the same router, but one is 2.4 GHz, and one is 5 GHz. You could then choose which network you want to connect to on your devices. Of course, you don’t have to use informative names like this—you could name one “Lime” and one “Lemon,” if you wanted.
5G (Fifth Generation Cellular)
5G is the next generation of mobile network technology, the successor to current 4G LTE. It is the next mobile data standard with a projected theoretical data transmission speed of up to 20 Gbps.
5G mobile network is, however, expected to support a minimum speed of 100Mbps and a maximum real-life speed of 10Gbps. Also, it is expected to possess lower latency when compared to its predecessor, 4G LTE.
Here is a brief history on mobile networking technology:
First generation - 1G
1980s: 1G delivered analog voice.
Second generation - 2G
Early 1990s: 2G introduced digital voice (e.g. CDMA- Code Division Multiple Access).
Third generation - 3G
Early 2000s: 3G brought mobile data (e.g. CDMA2000).
Fourth generation - 4G LTE
2010s: 4G LTE ushered in the era of mobile broadband.
1G, 2G, 3G, and 4G all led to 5G, which is designed to provide more connectivity than was ever available before.
5G is a unified, more capable air interface. It has been designed with an extended capacity to enable next-generation user experiences, empower new deployment models and deliver new services.
With high speeds, superior reliability and negligible latency, 5G will expand the mobile ecosystem into new realms. 5G will impact every industry, making safer transportation, remote healthcare, precision agriculture, digitized logistics — and more — a reality.