Router Age- Experts say the life expectancy of routers can range from 3-5 years.
Speed- Have you noticed the speed of your internet connection is slower than it used to be? There are many reasons why this might be the, but one common reason is an outdated router. Check if you are receiving the internet speed you are paying for by going to https://www.triotel.net/speed-test/
Connection Troubles- If your WIFI keeps disconnecting you, especially when you've had a reliable connection in the past, this could be an indication that your wireless router is degrading and it's time to update.
Security Updates- Not all wireless routers offer security & firmware updates, particularly many older routers, so if you're concerned about your family's online safety and home network security, then upgrading to the latest router is a good start.