How to Check If Your Android Device Is Functioning Properly
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There are a lot of components that go into making a functioning smartphone, and if one of those isn’t working properly, it can throw off your whole experience.

But how do you pinpoint exactly what’s wrong with your device? Maybe the accelerometer seems a bit off when you play racing games, or maybe browsing the web on mobile data or Wi-Fi doesn’t feel as fast as it should.

Whatever your problem is, there are apps that can help you figure out what is wrong and how to solve it. Even if you’re not having a specific problem, it might be good just to run through a little check-up How To Check New & Used Devices For Problems Using Simple Tips & Software How To Check New & Used Devices For Problems Using Simple Tips & Software Are you thinking of purchasing a new or used smartphone or computer? While you absolutely must test used electronics, even brand new smartphones and computers can suffer from defects that you may not notice until... Read More on your phone to ensure everything’s running smoothly.

Google Device Assist

Your first stop should be the Google Device Assist app [No Longer Available]. It’s available from the Play Store, but unless you have a Nexus or Moto device, you’ll need to download the APK and install it manually.

This app does a lot more than just check for issues. If you’re a beginner, it will give you tips and advice on how to better take advantage of your Android device (though we have some of our own advice for beginners New To Android? Part Two: Master Using Your Phone New To Android? Part Two: Master Using Your Phone Part two of the Android guide for absolute beginners. Get a grip on the basics of using your smartphone! Read More too).


When you boot up the app, it asks if you want Basic, Intermediate, or Advanced mode. Don’t worry, this can always be changed in the settings later.

What you choose will change what kind of tips you’re shown. Beginners will be told how to turn Wi-Fi  on or off, or create folders on their homescreen (above), whereas advanced users will learn about more obscure features like finding or remote locking your device Find My iPhone for Android? Meet Android Device Manager Find My iPhone for Android? Meet Android Device Manager Jealous of the iPhone's Find My iPhone app? Well, lucky for you there's an equally awesome app for Android called the Android Device Manager! Let's take a look at it. Read More  (below).


Navigation is simple, just scroll through the list of cards that Google displays for you. At any time, you can search for a particular issue in the top right, or tap the three-dot icon to see previous actions you’ve taken, change your settings, or view a range of information about your device.


You can even check your Wi-Fi or data speeds, and Google will tell you the results in plain English so that you actually understand the results.


Since the app is a part of Google’s services, it provides hints for other Google apps too, like little tricks for Google Maps. All the tips are explained in easy-to-understand instructions and visual explanations in GIF form if necessary.

For a simple, understandable solution, look no further than Device Assist.

Download: Google Device Assist on the Google Play Store or APK

Test Your Android

Any guess what this app does? If you guessed that it tests your Android device, you’re right!


Beneath the attractive colorful interface lies a powerful app that allows you to test everything from your screen’s multitouch capabilities to your built-in compass.

You can also slide over to the information tab to see information about your device, much like in Google’s Device Assist app. If you’re trying to live a life without Google Here's How You Can Use Android But Ditch Google Here's How You Can Use Android But Ditch Google Want to use your Android smartphone or tablet without Google? Want to use open source software? Here we take an in-depth look at exactly how to do that. Read More , this could be a solid alternative.

A small ad can be seen at the bottom of the app while you use it, but it’s easily ignored.

Download: Test Your Android on the Google Play Store

Phone Doctor Plus

As the name suggest, this app functions as a doctor for your phone. It allows you to run through all sorts of “check-ups” to ensure that everything is working properly.


As you complete the various tests, the progress bars along the top will fill up. The date on which you tested each part of your phone is noted, so you’ll always have a record of when different aspects were working or not.


And, as expected, you can check on the health and status of various aspects like your CPU or battery. In fact, we have some good tips on how to keep your battery healthy Keep Your Android's Battery Healthy With These Tips Keep Your Android's Battery Healthy With These Tips Software and apps can only go so far -- what about how to charge and discharge your battery? Learn all the tricks here. Read More in the first place.

Download: Phone Doctor Plus on the Google Play Store

Z – Device Test

This isn’t the prettiest app in the world, but it sure is functional. It uses big 3D skeuomorphic icons with tiny text beneath them — it’s a design trainwreck.


However, it does give you very specific and detailed information about everything from your accelerometer to GPS coordinates. It will put a big green checkmark over sensors and features that your phone does have, and a big red X through any that your phone is lacking.

Banner ads run along the bottom of the screen, and you’re sometimes interrupted by full-screen ads. But if you need the kind of detailed information this app can supply, those might be worth putting up with.

Download: Z – Device Test on the Google Play Store

Fix Dead Pixels

Several of the above apps will help you detect if you have a dead or defective pixel, but they don’t do anything to fix it. If you find that your screen has a stuck pixel (or several) there actually might be a way to revive it.

Some stuck pixels are hardware defects, and those can’t be fixed by any app, but others just need to cycle through their three options (red, green, and blue) enough times to refresh them.


To solve this, the best solution I found actually isn’t an app but a website: JScreenFix. It works on Android or any other device with an LCD panel. It displays a pure black screen so that you can identify the stuck pixel, then it offers a little square that you can place over the area that quickly shuffles through colors. Developers suggest leaving it running for about 10 minutes.

If you really want to try the app route, though, you could use the Dead Pixel Detector & Fixer. This app gives you different color backgrounds to identify dead pixels, then shuffles the whole screen rapidly through colors to refresh any affected areas. Best of all there are no ads and no permission requirements How Bad Are Those Facebook Messenger Permissions Anyway? How Bad Are Those Facebook Messenger Permissions Anyway? You've probably been hearing a lot about Facebook's Messenger app. Let's quell the rumors and find out if the permissions are as bad as they claim. Read More ! If you’re looking for similar suggestions for your computer, check out this guide on how to fix a stuck pixel on your screen.

Visit: JScreenFix website

Download: Dead Pixel Detector & Fixer on the Google Play Store

What App Do You Use?

There’s a flurry of apps available on the Play Store for checking on the health of your Android device, but these were the best that we found. Personally, I find Google Device Assist to be the best option for most people, but others will need the detailed readouts that apps like Z – Device Test can provide.

If the problem is that your phone won’t even power up, you can check out this list of fixes for why your Android phone won’t turn on.

Were there any amazing apps that we missed? What do you use? Let us know in the comments!

Image Credits:doctor hand stethoscope by Irenaphoto via Shutterstock

Explore more about: Android Customization, Troubleshooting.

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  1. Ben
    January 20, 2017 at 3:38 pm

    I should suggest the Phone Doctor Pro. Most of the test are automatically, and it includes the test for Touch ID and Reactivation Lock. Before buying a used phone make sure Reactivation Lock (Kill Switch) is disabled.

  2. Errol
    September 6, 2016 at 3:51 pm

    Google has pulled the plug on Device Assist even for Nexus users. It is no longer on Google Play as the Google's support site says [Broken Link Removed] . Makes you wonder why they have withdrawn it.

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    September 4, 2016 at 4:38 pm

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  4. Dennis
    March 23, 2016 at 4:11 pm

    I tried to download Google Device Assist, but it says it is incompatible with my Samsung Galaxy S6 running 5.1.1. Why is that?

    • Riley J. Dennis
      April 8, 2016 at 5:49 pm

      it requires a stock version of Android, so a Nexus or Moto device. tweaked versions of android (like that on a Samsung device) require you to download the APK, link is up in the article under that section.

  5. Neerja Misra
    March 23, 2016 at 1:44 pm

    I have samsung galaxy S4 . Every now and then I receive a message home touch wiz has stopped working . I always tap on ok . Although even after this message my mobile is working fine. Can any of these apps find out the reason and fix it or give me solution
    My email id is

    • Riley J. Dennis
      April 8, 2016 at 5:50 pm

      sounds like a Samsung-specific issue, but i've never encountered that on an S4. sorry, wish I could be of more help.

  6. donald Ukponu
    March 22, 2016 at 3:14 am

    Thanks for sharing this device.You just shared a powerful information for me.Since android was developed by Google. It will be okay to try the Google device apps

    • Riley J. Dennis
      April 8, 2016 at 5:51 pm

      thanks, yeah, makes sense to use google apps on a google OS

  7. Anonymous
    March 21, 2016 at 5:05 pm

    In the past, I've used a number of simple tools I've found on Fdroid to check various aspects of Android system functionality. Sometimes, a simple touch or light sensor test is more useful than a suite of hardware tools that might not be very good at describing what is or isn't explicitly a problem.

    • Riley J. Dennis
      April 8, 2016 at 5:51 pm

      yeah for sure, makes sense