Interference essentially clutters the frequency range, resulting in incomplete data transfer, partially blocked signals, data loss, and in the worst cases, device failure. Electromagnetic and radio frequency interference (EMI and RFI) cause problems because they alter the ability of one circuit to trigger the next action or circuit correctly. To verify your connection, do the following: If you are using a mobile phone to connect your Ring device, go into your phone settings and disable the cellular data connection. Disconnect the power cord to your modem and router for approximately 10 seconds, then plug your modem back in. Once it is back online, plug in your router and wait until.