The router is optimized and no obvious obstructions exist, yet the Wi-Fi still drops out. Here are a few options to put a final nail in the proverbial dead-zone coffin. Powerline Adapter —This two-piece device plugs directly into your router and broadcasts your internet through the powerlines. Dec 17, 2018 · Upgrading from an older single-band router to one with dual-band may also make a big difference in your wireless quality. Single-band routers use the same 2.4 GHz frequency as microwaves and phones. Dual-band routers have a second 5 GHz bandwidth option that could significantly improve wireless performance in your home.