How much battery does bluetooth use

While an app may still be loaded in RAM temporary memory , the app is unlikely to be doing stuff in the background to drain your battery. You likely want them to perform those tasks—force-quitting the apps will prevent them from doing the very things you gave them permission to do. In that case, force-quitting it is a safe approach. You can then wait for an update to the app that, with any luck, fixes the bug.

Restarting applications repeatedly will probably cost you more battery life than leaving them alone, and any automatic task manager will itself be demanding power constantly from your phone. As we mention above, many apps that use your location do so only intermittently—with the exception of a few bad apples, or apps that really do require constant location tracking, most apps are well behaved in this respect.

Instead, follow our tips above to check if any of the apps consuming the most battery life also track your location. Many people, and even smartphone vendors such as Apple, claim that using Wi-Fi for wireless data consumes less battery than using a cellular signal, so you should use Wi-Fi whenever you can.

Where you will see differences is in areas where LTE coverage is poor. As we explain above, your phone uses significantly more power when trying to find and connect to a weak signal.

Conversely, if your phone is struggling to get a good cellular signal, try finding an accessible Wi-Fi network at a coffee shop or restaurant, for example to use instead. We found that after an hour of Web surfing, an Android phone had used roughly 4 percent of a full battery more when we were driving in a car than when we were stationary with a strong LTE signal; an iPhone used 8 percent more of a full charge.

The difference will vary by phone, carrier, and locations, of course. Both iPhones and Android phones include a hands-free feature for accessing their respective virtual assistants. Although this feature is convenient, it requires your phone to constantly listen for that special phrase, which uses some power. In our testing with an iPhone 6s Plus and a Nexus 6P, we saw a negligible difference in battery usage between having the always-on virtual assistant enabled or disabled over a two-hour period.

If you find that your phone claims it has 80 percent of a charge left but dies a few hours later, try this procedure. A common warning around the Internet is that you should use only the charger that came with your phone.

Several warnings are woven into this claim. In reality, the phone itself contains all the circuitry responsible for charging its battery.

This is why you can charge your phone using the USB port on a computer, a USB battery pack, or a charger in your car—the phone is designed to charge from a variety of power sources that can produce a wide range of current. For example, the charger that ships with an iPhone supplies about 1 amp of current, but the phone can also charge from a 0.

For example, if you use a recent iPhone with a charger that can provide up to 2. Finally, you may read warnings that a cheap third-party charger could damage your phone. A poorly made charger can not only damage your phone but could also hurt you by exposing you to dangerous currents.

Battery cases are popular for iPhones. And you are clearly using it when it is connected, so you don't want to turn it off then, either. While it listens for Bluetooth devices, it uses no measurable energy to do so, as with Wi-Fi.

When Bluetooth has an active paired connection to a hands-free device it consumes 2. As the battery capacity of an iPhone 8 not plus is about mwh, if Bluetooth was the only thing using power the battery would run down in about hours, or about 3 months.

Some Bluetooth devices require higher power; the most will be 10 mw, but that still means that if your battery life isn't what you think it should be, the problem is not Bluetooth or Wi-Fi. What are other reasons that some users turn off Wi-Fi? Unless the network is one that the phone is actively connected to, iOS sends a random MAC address when a network "pings" the iOS device.

So you can't be tracked through Wi-Fi. You can override this feature by connecting to, say, a mall's or store's "free" Wi-Fi service. Related: What are the best Bluetooth speakers? There was a small difference between the devices we tested. This is likely down to a margin of error, highlighting just how little impact Bluetooth actually has on battery life.

We can chalk the 0. Again, this is so small it makes practically no difference to battery life. This highlights that modern smartphones put Bluetooth radios to sleep when not in use.

Well, our four-hour video playback test showcases a similar battery drain difference across all five devices. The comparison between Bluetooth off and on but not connected reveals an average of just 1.

Likely because our devices are in constant use for a prolonged period of time, so the Bluetooth radios spend less time asleep. Related: The best portable chargers and power banks. Extrapolated to a full charge cycle, watching video while leaving Bluetooth on but not connected increased power consumption by about 6. However, this constant video playback scenario is improbable in the real world. The reason for this discrepancy is likely down to smartphone hardware and software optimizations.

Similarly, each Android software variant likely has different algorithms for Bluetooth wake-up and pairing scan intervals.

No two devices will see the same amounts of battery drain, but results vary from zero to negligible in any case. How do I show battery percentage on Bluetooth Android? How do I check the battery level on my Bluetooth headset Android? You asked: What is optimized battery charging Android? How do I find battery percentage on Bluetooth Windows 10?

Like this post? Please share to your friends:. Browsing Apps. Right-click on your Windows 8 desktop from the Start screen. Click on.