How Long Do Modems Last As a network expert, I've had to change and replace many modems over the years. It's also worth noting that they endure longer than you may think. Many people do not have to change a modem to acquire a quicker internet. However, you'll never be able to obtain faster internet than what your data bundle offers. Hence, this blog will highlight how long do modems last and when you need to replace them. Let's find more about modems: