WiFi devices can operate in two different: 2.4GHz and 5GHz. However, most current smartphones, especially among mid-range and low end, are only capable to operate under the 2.4GHz band. When a WiFi device operates in an indoor environment, the radio-frequency signals reflect from various metallic objects, which means that the signal arriving at the receiving end of the circuit therefore comprises several different component waves that hardly ever perfectly reinforce each other. At certain points, the components can cancel each other out, producing dead spots WiFi shares 2.4GHz band with Bluetooth, microwave ovens, remote controlled toys, and many other products, which means that interferences may easily appear.
Nevertheless, today’s 802.11-2009 standard supports both 2.4GHz and 5GHz bands, and the latest routers can operate at both frequencies at the same time. This means that, users can connect their mobile phones or laptops to the 5GHz network, there is more bandwidth and less interference, while operating a 2.4GHz network for other devices such as old laptops or printers.
In terms of daily use, a device connected to a 5GHz network will enjoy from 33% to 55% more speed, and also less interference and network outages, resulting on a better user experience.
Most today’s devices only support 2.4GHz frequency, which means that they are vulnerable to interference in the network. However, some big manufacturers such as Xiaomi, Meizu or LeTV, have decided to incorporate Dual WiFi technology into their high-end devices, whose prices are not affordable for many people. Nevertheless, UMi has decided to make this technology available for everyone. For this reason, they launched the UMi Rome, a $109,99 Octa-Core device which incorporates this interesting feature for an amazing price.