Wi-Fi is one of those convenience features that we’re all so familiar with that it’s easy to take it for granted. And over the years, the way our phones use Wi-Fi has changed a lot, including some features and settings that will drain your battery. Fortunately, there is a quick setting that will eliminate the battery drain.
If this sounds familiar, say so. You use your phone after driving, walking around the store, or even sitting in the kitchen for a few hours and you see significant battery usage without ever waking up the screen. That’s because Wi-Fi is running wild in the background, aside from sending you app alerts and social media notifications. Let’s fix that.
Whether your Samsung Galaxy is brand new or you’ve had it for years trying to improve battery lifethere’s a setting you probably haven’t noticed that’s secretly filtering your juice. The problem is “Wi-Fi scanning” and it works even when Wi-Fi is turned off.
The problem is Wi-Fi scanning
And here’s what it actually does
Often called Wi-Fi scanner, always-on scan, or always-on scan, it’s probably a setting you agree to when setting up your phone without realizing the consequences.
Wi-Fi Scanning is a useful feature on Android that runs in the background and allows your phone, apps, and other location services to search for nearby Wi-Fi networks. This happens even if your primary Wi-Fi switch is disabled in Settings. Wait, what? Yes, it scans even if you turn off Wi-Fi.
The main advantage of Wi-Fi scanning is better, more accurate location information and tracking even indoors. This setting prevents your phone from turning off Wi-Fi completely, so location-based apps (like Google Maps, weather, and more) can continue to work and stay up-to-date. It also complements indoor GPS coverage, ensuring your phone has the best possible location information.
While that sounds great, it means your phone is constantly waking up the CPU and Wi-Fi radios, sending alerts, storing data, and sharing data with many other apps, not just Google Maps. As you can imagine, your phone is constantly doing all of this, even if you turn off Wi-Fi, it will degrade your battery life. Not to mention your privacy and location data.
How to turn off Wi-Fi scanning
Go ahead, disable Bluetooth scanning as well
Don’t get me wrong, Wi-Fi scanning has its merits and reasons for wanting to keep it on. However, if you’re trying to figure out why your battery is draining so quickly, or you just want better battery life on your Android device, you might want to disable this setting.
To turn off Wi-Fi scanning on your Galaxy phone, pull down the notification bar and enter Parameters. Scroll down, select Locationthen tap Location services near the top. Here you’ll see location services for emergency earthquake alerts, amber alerts, and the like. However, you will disable Wi-Fi scanning to save battery.
Scroll down next to all the location services enabled on your phone, then change the option Turn off Wi-Fi scanning. That’s it, we’re all done. Now, if you turn off the basic Wi-Fi setting, it will actually turn off and not wake up your phone constantly, thus increasing battery life.
If you look closely at the screenshots above, you probably noticed a very similar Bluetooth setting. We are here in the Location settings menu, you can also turn off Bluetooth scanningit’s essentially the same thing. Bluetooth scanning will allow your phone to turn on Bluetooth even when the setting is off, then scan for nearby BT devices to provide more accurate location information.
Both of these settings offer advantages for Android, especially for apps and services based on your location. However, they both fire up your phone with all those beeps and radios, scanning and communicating all the time, wasting precious battery.
Easy solution to battery life problems
I understand that changing anything with Wi-Fi can be a concern, but trust me, once you disable Wi-Fi scanning, you’ll be fine. Connecting to your home network will still be fast and easy, connecting to Starbucks or hotel Wi-Fi won’t be affected, and your phone will work perfectly. This is a quick and easy way to get back a little more water.
However, if you notice that apps like Google Maps, weather, or other location-sharing services start to struggle, or if you need high-precision location data, you may need to turn it back on. However, I turn off Wi-Fi scanning on every Galaxy phone and keep Bluetooth scanning enabled because it’s more efficient and gives me better location information without draining the battery.
- Brand
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Samsung
- SoC
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Snapdragon 8 Elite Gen 5
Get the new Galaxy S26 Ultra with AI and an all-new privacy screen. It’s big, powerful, packed with artificial intelligence, and you’ll love the S-Pen stylus.
