WiFi is unreliable and even the best connections can drop unexpectedly

With older routers and access points, reliability is an issue. In the last few years, however, there have been huge leaps in reliability, speed, and intelligent technologies such as the aforementioned MU-MIMO, and QAM (quadrature amplitude modulation). These days, WiFi is seen as a must-have, not a luxury. Even if you live in a home with thick walls, reflective surfaces, many storeys, and other obstacles, there are still things that can be done to improve your WiFi coverage.