How to use your old Android phone as a Wi-Fi extender

If you have an old Android phone gathering dust in a drawer somewhere, you may already have everything you need to fix dead spots on your home Wi-Fi network. Instead of purchasing new hardware, whether it’s a repeater, mesh node, or more powerful router, you can simply use an old Android device.

Most households have at least one old Android phone forgotten somewhere, too outdated for everyday use, but too functional to justify throwing it away. Before you put it in the recycling bin, you need to think about what it can still do for you. With nothing more than its built-in settings and a power outlet, this phone can do double duty as a Wi-Fi extender, helping to transmit your home network’s signal to corners of the room where the signal is spotty at best.

You don’t need any special apps, additional hardware, or even advanced technical knowledge. Android’s built-in hotspot feature allows your phone to connect to your existing Wi-Fi network and act as a repeater to broadcast it as a separate signal, extending coverage.

If your home has areas with weak internet signal, this can be quite annoying. While it’s true that some things can be done, did you know there is a correct way to position your router’s antennas? – this may be a nuisance until it is repaired. There are of course things you can buy. Upgrading to a mesh system or purchasing a new router can be quite expensive, while a Wi-Fi extender can run you around $50, depending on the model. That’s still money you simply couldn’t spend using the technology you already have.

Your Android phone can connect to your existing home Wi-Fi network and rebroadcast the signal as a separate hotspot. You can then connect other devices, from laptops to tablets and smart TVs, to this Wi-Fi signal. Think of it as a signal relay, because the phone picks up the Wi-Fi from your router and simply transmits it to other devices that need it. It’s not a mesh system, and it won’t work as one, but it’s a free, low-effort solution for low coverage areas.

The process for this entire operation is quite simple and only takes a few minutes. Our starting point comes after you’ve already located your old Android phone, recharged it, and run the latest updates.

1. Open Settingsgo to Network & Internet > Internet. Select your home Wi-Fi network and enter the password when prompted.

2. Go to Settings > Hotspot and tethering and enable Wi-Fi hotspot. You can also find the Hotspot icon in the drop-down menu. You just need to know what all these Android status bar icons mean.

3. Tap on the Wi-Fi hotspot to rename the network and set a strong password to secure your network and make it easy to identify.

4. If your phone supports it, you can select 5GHz in the speed or band settings. This will improve the performance of nearby devices, but provide a shorter range than 2.4 GHz.

5. Place your phone halfway between your router and the dead zone you’re worried about. Make sure it’s near an outlet so you can easily charge it. Older phones already have questionable battery life, and continuously running a hotspot will drain the battery quickly.

The downside to this method is that the phone extends your existing Wi-Fi network, but this will not increase your internet speed in any way. If your internet connection is already slow, hotspot won’t solve the problem. You should also keep in mind that any commercial Wi-Fi repeater or mesh node will outperform this Android-based solution.

Another thing to keep in mind when using this method is that there is no smart home integration to speak of. Dedicated Wi-Fi extenders often support smart home ecosystems and seamless roaming, while an Android hotspot creates a separate network, so some smart home devices may not connect to it reliably. Additionally, you will have to manually switch networks as you move around your house.

The answer to this question is one that only you can provide. Do you want to invest in your network at this stage? An Android phone extension costs nothing and is ideal as a temporary or additional solution for a single problem. However, you’ll get much better range and performance with a commercial Wi-Fi repeater, mesh node, or new router. Go for the Android phone option if you need a quick solution and already have an unused device. You can even try the USB tethering alternative for a more stable connection. It will make a surprisingly good Wi-Fi extender for the right situation, it takes minutes to set up, the cost is zero, and it helps keep a device out of the recycling bin. Just understand that this is a practical workaround and not a permanent network solution.