Fri. Aug 19th, 2022

Wondering if your smartphone is in good health? Whether it’s a used phone you just bought or an old device you want to sell, you can put it through a series of diagnostic tests. Some Android devices have built-in diagnostic tools, but the App Store and Google Play Store also offer third-party diagnostic tools.

Apps like Phone Doctor Plus, Phone Diagnostics, Phone Check and Test and TextX can run a battery of tests to control the touch screen, audio, video, camera, microphone, sensors and other components of your phone. This is how they work.

Run Diagnostics on Samsung phones

samsung test

Samsung’s series of Galaxy smartphones have a built-in diagnostic tool accessible from the keyboard. Open the phone app, tap Keyboard, and then type *# 0 * ## 0 * #. A diagnostic screen pops up with buttons for a variety of tests.

Press Red, Green, or Blue to test these pixel colors. Press Recipient to control the sound, Vibration to try the vibrating function, or Sensor to test the accelerometer and other sensors. You can also press Touch and then move your finger around the screen to test the touch screen, or tap Low frequency to test low frequency sounds.

When your test is complete, tap the screen or press the back button to return to the main screen. If you press the back button from the main menu, you will return to the Phone app.

Samsung members for Samsung phones

samsung members

Samsung offers its own free app known as Samsung Members, which can be downloaded from Google Play. It provides sales and technical support as well as a built-in diagnostic tool. Open the app and press Diagnostic button on the home screen.

Tap the individual icons to run diagnostic tests on the battery, SIM card, sensors, touch screen, flashlight, camera, microphone, speaker, Bluetooth, Wi-Fi and more. Alternatively, you can press Test all button to perform all the tests one after the other. If the test is successful, a tick will appear on its icon.

Run Diagnostics on Motorola phones

device help

Motorola phones can use the Device Assistance app, which is preinstalled on some devices. Open the app and press Unit diagnosis. Choose Troubleshooting to test the touch screen, battery, sound, camera, connection, and more.

choose Hardware test to run diagnostics on the display, backlight, touch screen, multi-touch function, flash, front and rear camera and proximity sensor. Run a test by tapping the icon of the function you want to run. You can tap Full Test on the hardware screen to perform all available diagnostics.

Phone Doctor Plus for iPhone and Android

phone doctor plus

Phone Doctor Plus, geared for iOS and Android, starts by showing you a list of different tests to run, including those for memory, CPU, speaker, microphone, Wi-Fi, Bluetooth, GPS, touch screen, camera, charging and many more. Press Game button to run all the tests or swipe left to see a list of all available tests you can run individually. The app then displays the results of any tests.

The app also provides a status screen that shows your battery charge, available storage space, free memory and network bandwidth. It also examines and displays the exchange value of your phone. The Android app also launches an inventory report, which ensures that all the phone’s components are original, and a battery condition test to check the status of your battery.

Phone diagnostics for iPhone and Android

telephone diagnostics app

Available for iPhone and Android, Phone Diagnostics offers a range of tests to check your touch screen, camera, speaker, microphone, Wi-Fi, mobile access and many other components. Just press the button for the test you want to run or press Start to run all the tests one after the other.

The multi-touch test prompts you to place three fingers on the screen. The camera test takes pictures using the front and rear cameras, while the video recording test records a fast video using the rear camera. The motion test asks you to move around your phone, and the GPS test confirms your location on a map.

The app generates no reports or results, but each successful test turns its button green, while a failed or interrupted test is displayed in red. The app can also try to direct you to a workshop if your phone needs repairing. The basic version is free with ads, but you can pay $ 1.99 to become ad-free.

Phone check and test for Android

telephone check

Designed for Android, Phone Check and Test allows you to trigger a comprehensive range of diagnostics on your device. The app starts with an overview to explain how it works, how its various tests are run, and what each test includes. A screen shows you the current consumption of memory, storage, battery, Wi-Fi and mobile networks.

To run the guided tests, select the features you want to include. The app can, among other things, control your battery, network connection, sound, screen, touch screen, GPS, camera and sensors. Some of the tests run automatically, while others require your input.

After each test you can press Okay if your phone passes or Not okay if something raises a red flag. You can also skip any test and go to the next one. An overview screen then displays the results of each test.

TextX for iPhone


Designed for iPhone (and iPad), the free TestX app can run diagnostics on your phone’s touch screen, earphones, speaker, microphone, accelerometer, compass, Wi-Fi, Bluetooth, battery, sensors, camera and flash.

The app provides a lot of flexibility to run the various tests. You can choose Quick scan to check key functions, or press Full scan to check everything. Alternatively, you can perform all the tests within a specific category or simply run a specific test.

A green circle shows a test that has been completed successfully. Once you have run the required tests, you can generate a complete report to see the results. As a bonus feature, the app provides password-protected access to notes, files, photo albums, and other content that you may want to create and secure.


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