Best daily deals
Best daily deals

Links on Android Authority may earn us a commission. Learn more.

Why is my phone's battery draining so fast?

Sometimes phones start dying for no apparent reason. Figure out what's going on!
August 2, 2021
Google Pixel 3 XL showing USB C and cable stock photo 1 - battery draining
Edgar Cervantes / Android Authority

Devices get more energy-efficient as batteries get larger, but battery life is still a concern for most users. Such is the nature of modern tech, but this doesn’t mean we should be plugging in multiple times a day. If your phone’s battery is draining faster than it should, identifying the culprits and finding solutions is worth the effort.

We are here to tell you the most common battery hogs in the smartphone world. Also included are solutions for the most common issues. Let’s get to it before that screen shuts off!

Next: How to extend your phone’s battery life

Reasons why your phone is draining so fast:

  1. Screen
  2. Spotty service
  3. Applications
  4. How old is your phone?
  5. Other battery drainers

1. Screen!

Samsung Galaxy Note 20 Ultra pen leaning against phone
David Imel / Android Authority

The screen is the biggest battery hog since modern smartphones came to be. Panels keep getting bigger, brighter, and more colorful, as well as sporting higher definitions. We even have large foldable phones and dual-screen devices now. Though all these improvements add to the general experience, they also make smartphones more power-hungry.

How to check battery usage:

  1. Open the Settings app.
  2. Select Battery.
  3. Hit the three-dot menu button on the top-right corner.
  4. Tap on Battery usage.
  5. Hit the three-dot menu button on the top-right corner.
  6. Tap on Show full device usage.

Check your battery usage, and you will find most times the screen will take the top place. At this point, my phone places the screen as the number one battery killer with 72% usage. Smartphone display technology is advancing much faster than battery tech, making battery life an even bigger issue to tackle in years to come. Until things get better, you will have to conserve energy.

Related: Which phone has the best display?

Tips to lower screen battery drain

  • Lower screen brightness: Dimming your screen brightness will help you save battery significantly.
  • Use adaptive brightness: This will ensure you get a bright screen when you need it, but you also save battery when high brightness isn’t necessary.
  • Reduce screen refresh rates: Some devices sport screens with higher refresh rates, and often you can customize this in the settings.
  • Reduce auto-lock times: You ensure your screen isn’t on just waiting to possibly be used by reducing auto-lock times.
  • Ditch live wallpapers: They may look nice, but your phone is essentially playing a video at all times, and that kills the battery.
  • Use a black wallpaper: If you have an AMOLED display, using a black wallpaper is the most power-efficient because the display doesn’t have to activate those pixels. It’s argued the difference isn’t huge, but every bit of help is welcomed.
  • Take advantage of the smaller screens: Some phones like the Samsung Galaxy Z Fold 2 and Motorola Razr 5G have smaller outer displays. Try to use those more often than the larger display when there’s no need for the extended view.

2. Spotty service

LG V60 making a call

Areas with bad cellphone reception are silent battery killers, which is even more annoying than not watching the latest cat videos. Your cellphone constantly communicates with nearby towers, trying to keep you connected every second of the day. Sometimes it can’t, and will work extra hard to reach the network and get you back on the grid.

If you live in a rural area, work in a massive building, or often find yourself in areas with spotty service, chances are your phone will die faster than normal.

How to improve signal to reduce battery drain

  • Switch carrier: Carrier reliability varies by area, city, and neighborhood. Do some research, find out which carrier works best in your areas of interest, and look into switching. We can help you find the best plans for each carrier!
  • Airplane mode: The Airplane mode feature can force your antennas to take a break. Turn off all connectivity, and your phone won’t be working hard to stay connected. You can do this strategically when you are in places you know have bad service. Alternatively, you can use smart tools like IFTTT to automate Airplane mode by location.
  • Network extenders: Carriers often offer network extenders that use the internet to give you signal. Consider getting one if you know you are in a place with spotty service for long periods of time. You could have one at home or work to ensure the signal is strong where you spend most of your time.
  • Signal boosters: Signal boosters can be expensive, but people swear by them. These products have an outer antenna that can pick up reception. The signal is then spread through the house with an internal antenna. A popular option is the WeBoost Home MultiRoom Kit.

Also: 5 best signal booster apps and other methods

3. Apps and background services

Google Play Store on smartphone stock photo 2
Edgar Cervantes / Android Authority

Keep your apps in check if your phone’s battery is dying fast. Certain apps drain the battery more than others. The obvious ones are YouTube, Netflix, and any streaming services. You might also want to avoid playing games if you want to save energy, as those happen to be huge battery hogs, especially if you are fond of titles with high-end graphics.

Plenty of apps kill your battery without active usage. Applications like Facebook, Messenger, Instagram, and WhatsApp are common ones. Communication services like these try to keep you in touch and updated all the time. This means the apps constantly operate in the background, using data, pulling your location, sending notifications, and more. Not to mention that we tend to spend a lot of time using them, whether you are endlessly checking your feed or messaging friends and family.

How to fix it

  • Keep app downloads minimal: I often realize I am only using like 20% of the apps I have on my phone. Meanwhile, these applications are always working in the background and wasting battery. Why even have them? Go on a cleaning spree and delete apps you know you don’t need.
  • Stop apps from working in the background: If you notice an app is taking too much of your precious juice, you can limit its background. Simply go to Settings > Apps & notifications > Select the app > Advanced > Battery > Background restriction > Restrict. Just realize you will lose some features and functionality, as the app will be sleeping when not in use.
  • Close apps: While Android devices are made to multi-task, and closing apps can hurt more than it helps, there are times when closing apps is your best bet. Applications can go rogue, misbehave, or fail, in which case they often start draining your battery unnecessarily. It is good to close or kill the app to give it a fresh reset when this happens. Go to Settings > Apps & notifications > Select the app > Force stop.
  • Be mindful of your usage: Sometimes we say we want better battery life, but find ourselves playing games, watching movies, and spending hours on social networks. Then we wonder why the phone dies before you get home! Be mindful of the apps you use and for how long you use them.

More: The best battery saver apps 

4. How old is your phone?

T-Mobile G1 with old battery
The T-Mobile G1/HTC Dream

How old is your smartphone? More specifically, how old is the battery? Smartphone batteries start to lose performance with time (as well as constant heat).  In fact, age is the primary reason your battery life gets shorter as your phone gets older. This means anyone rocking an older phone is likely reminiscing about the old times when the phone used to last much more on a charge.

You shave a second or two off of your phone’s maximum battery capacity every time you charge it. Batteries use chemical reactions to store and process energy, and no chemical reaction is infinite. The method has been optimized like crazy, though, and that’s why batteries last as long as they do, to begin with. Additionally, batteries lose capacity even if you don’t use them. Popular Mechanics has an excellent article on the matter here.

How to fix it

  • Buy a new phone!: It may sound a bit depressing, but once a battery is too old to function efficiently enough, there is nothing sensible you can do about the issue.
  • Change the battery: Phones with removable batteries are scarce now, but if you happen to be rocking one, you could buy a new battery and replace the worn-out one. If you have a phone with a non-removable battery (which is likely the case), you can open the phone up and change the battery, but this requires some technical know-how and involves some risk. You can also find a phone repair shop and have them take care of the job for you.

5. Other battery problems and tips

standby battery draining usage
  • GPS, Wi-Fi, and Bluetooth: How often do you use these antennas? I know I leave them on at all times, but I seldom put them to work. GPS, Wi-Fi, and Bluetooth are using the battery, even if a little. Turn them off when you don’t need them, and you will notice a boost in battery life.
  • Also 5G: 5G speeds are faster, leading to heavier usage of your phone. This leads to shorter battery life.
  • Camera: Taking photos and videos requires ample amounts of energy. Avoid doing it so often, and your phone will live longer.
  • Feeling cold?: Lower temperatures affect battery life significantly. Roger Gurney, owner of Arctic Tech Solutions, tells USA Today that lithium-ion batteries stop discharging electricity in the extreme cold. He goes on to mention constant exposure to cold weather can permanently damage a battery. A good solution is to keep the phone close to you, so that body temperature keeps it toasty.
  • Stay up-to-date: Software updates often come with battery life improvements, so it’s a good idea always to update your phone to the latest available software version.
  • Get a portable charger: A good battery pack will keep your phone alive longer without keeping you tethered to a wall. Here is a list of our favorite portable battery chargers.