Internet Keeps Disconnecting

Right around the start of this year (2025), we have been having Internet connection issues. Our devices stay connected to the WiFi network, but the Internet goes out constantly. Even devices that are wired to the modem/router lose connection. This happens multiple times a day, and seems to happen more and more each day. 

We upgraded our Xfinity Internet plan and bought a new Netgear modem/router that is compatible, per the Xfinity list of devices. The connection issues have not improved and now we are paying more for Xfinity!

Think we will need to call for a technician visit to run signal tests for our connections inside and outside the house. A similar issue was occuring with our previous Xfinity account at a house a mile away from here, and the technician had to replace old parts, tighten connections, and cap an open connection that was uncovered at the tap.

Anyone else have better ideas?

Thank you.