Buyer's remorse summary: the most common issues that customers have with their Modem Router Combos are typically related to Not all modem-router combos are compatible with every internet service provider (ISP). Customers may find that the device they choose doesn't work with their ISP's service. It's essential to verify compatibility before making a purchase. **Compatibility Issues** , Some modem-router combos may not provide the desired speed or coverage, especially in larger homes or for high-bandwidth activities like gaming or streaming. Customers might experience slow internet speeds or poor Wi-Fi coverage in certain areas, which can be frustrating. **Performance Limitations** , Customers may encounter difficulties with firmware updates or software bugs. Outdated firmware can lead to security vulnerabilities, performance issues, or even connection problems, requiring customers to manually manage updates. **Firmware and Software Problems** and Some modem-router combos may overheat, particularly if they are used for extended periods or placed in poorly ventilated areas. Overheating can lead to performance degradation, disconnections, or hardware failure. **Overheating** .

We compiled the list of the most popular Modem Router Combos of 2025 that have received the fewest complaints in these categories.