Common errors when setting up a Wi-Fi network include poor placement of the router, using a router that doesn't fit the network's needs and keeping default settings. Many users expect to get the router speeds listed by the manufacturer, but these are theoretical and typically don't occur in real-world conditions.
Router placement has a significant effect on the router's performance. The optimal position for a router to send out signals is in an open space towards the center of the home or office. If one location needs more coverage, that's where the router should be set up.
If the router doesn't fit the user's needs, it leads to performance issues. The user should base the router he selects on the amount of devices it accommodates and the size of the home or office. If too many devices connect to the router at one time, it overloads the router.
Keeping a router's default settings is a security risk that can also lead to performance issues. If the user doesn't set up a password on the Wi-Fi network, anyone nearby is able to access the network. Using the router's default user name and password is also a security risk, as many people know the default passwords used by manufacturers. Using the router's default channel for Wi-Fi frequency may cause performance issues, because someone else nearby could already be using that channel.