Placing a coin on top of a Wi-Fi router or modem has become a popular online suggestion for improving internet connectivity. The claim suggests that the metal in the coin can influence the distribution of Wi-Fi waves, helping the signal reach certain areas more effectively.
However, there is no technological evidence that placing a coin on a router improves Wi-Fi strength or prevents connection drops. Experts instead point to router placement, interference and equipment quality as more important factors affecting home connectivity.