ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

How to Find out If Your Phone's Battery Is Bad and How to Act Properly

Updated on July 26, 2017


Have you ever seen your phone behave very strangely? In spite this behavior could be caused by firmware bugs or other hardware problems, it is often caused by a faulty battery. The battery is one of the most important parts of a phone, because it gives it the power it needs to operate, yet it is a component that frequently presents issues.
You can, however, predict if your battery is faulty and needs replacement by checking out for some specific signs. Let’s see which these sings are, how to find a proper battery for your device and how to replace it with the old, defective one.

Display Issues

It is obvious that most display issues are caused by a hardware problem, a faulty screen or a cracked screen. Nevertheless, if your battery has started malfunctioning, your screen brightness might randomly change, even if you didn’t alter any settings. A faulty battery can rarely make your screen behave like it has had a fall and broke (flashing colors in random parts of the screen). So if you see your phone’s screen behave completely strangely without having it hit before, either you have a faulty graphics card/ screen element or just a faulty battery as mentioned above.

Randomly Changing Battery Percentage

After each reboot, you might find your battery percentage changed to a random number, higher or lower than the normal without any actual reason. The only way to make it come back to normal is to reboot your phone a few times. Again, a bad battery is the culprit. In some rare cases, this could be caused by a faulty battery sensor (like it happened with Samsung’s Galaxy Trend Plus model) but, even in this case, replacing the battery fixes the problem.

Random Reboots

One of the most common ‘symptom’ of a faulty battery is random phone reboots. Again, this could be caused by some other bad component or bugs in the firmware but in most cases a faulty battery is the reason that your phone is having random reboots.

Swollen/ Overheating Battery

There is no need to tell much here, it is clearly obvious that if your battery overheats without excessive phone use and if it has started swelling or getting small ‘knobs’, something is wrong with it.

An extreme case of a swollen battery.
An extreme case of a swollen battery.

Reduced Battery Life

The most common sign of a malfunctioning battery is reduced battery life, of course. If you have started to notice that your battery lasts for less, it is certain that there is something wrong with it.

Drawing of a 'dead' battery.
Drawing of a 'dead' battery.

What to to if you have a faulty battery?

If you ever find out that there is something wrong with your battery, you shouldn’t ignore it. It could temporarily leave you without a phone one day, it could leak and damage your phone or, in extreme cases, it could even explode, causing serious damage or injury.
The right thing to do is replace it as soon as you can, of course.

What battery should you get?

There are many types of phone batteries, but the most used is Lithium-Ion battery (Li-Ion).
However, you should search online or check by yourself what exact battery your phone needs. If you are still unsure, you can always ask an expert to tell you.

  • Always buy what your manufacturer recommends about your device.
  • Be careful NOT to buy batteries of the type ‘more capacity that the original’ or OEM batteries. It is better to pay a bit more and have like 1 hour less battery life than risk your and your phone’s safety.
  • Make sure to buy batteries from trusted physical shops. It is generally recommended because that way you are able to check if the new battery is OK or if it has signs that might declare it factory defective. If you can’t go to a physical shop and want to buy online, make sure to buy from trustworthy online sellers and always seek for a ‘Returns Accepted’ notice so that you will be able to return the product if you behold something uncommon on it.

An example of a Li-Ion battery, made by Samsung.
An example of a Li-Ion battery, made by Samsung.

How do you replace your phone's battery?

Again, the procedure totally depends on your model and manufacturer. However, the steps are generally generally the same for every device.

If you have access to the phone’s battery:

  • Backup your important data. This step is very important, there is no data loss danger involved in battery replace procedure but you should always backup your data before you mess with your phone in any way, just in case.
  • Turn off your phone. NEVER attemp anything while your phone is powered on or plugged in.
  • Carefully open the back cover of your phone. Find the small notch and slowly pull it until you completely remove it.
  • Remove the battery.
  • Place the new one, be very careful to place it properly, always depending on the battery and the phone model.
  • After checking that everything is OK, put the back cover the way you removed it.
  • Power up your phone.


In case you are unsure about the procedure contact an expert.

If you do not have access to your phone’s battery:

If you do not have access to the device's battery, take it to a certified technician to replace it. Do not attempt to tear down your phone yourself, unless you are experienced, as severe damage might be caused.

This is it! Your device has now got a new ‘heart’ and is ready to work again.

Important Note

After replacing your battery, make sure to properly dispose the old one by throwing it to a special battery recycling bin. Do not throw it away in the environment or in regular bins as it is very dangerous for our health and the environment itself.

Care for the environment, properly dispose batteries.
Care for the environment, properly dispose batteries.

© 2017 Thomas KTR


    0 of 8192 characters used
    Post Comment

    No comments yet.


    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

    Show Details
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)