TestM is done through a wide and comprehensive set of tests where all components of smart phones are diagnosed in order to assess the status of phones. TestM then creates a detailed report on the status of your smartphone so you can save it on your phone or share it with others.
Features and usage
TestM is a free app that you can download from the Google Play store (or Apple Store) and can be downloaded in less than 5 minutes on any smartphone running Android 4.3 or higher. TestM supports more than 15190 different models for smartphones and in 20 different languages.
Whether you need to repair, sell, or buy a used smartphone, the TestM report will be useful. In short, if your phone has any problems by performing a full test and knowing what is wrong. Want to buy a pre-owned smartphone? Simply ask the owner to send you a TestM report. This way you know what to buy. Want to sell your phone? Then, take a full test on your device and attach the TestM report as a photo to your listing. This way you have a chance to sell your phone faster.
How the app works: When you open the application, you will be given either a quick or full phone test. I chose the latter, which took about 5 minutes. About 20 different tests to assess the different aspects of my phone as mentioned below:
Touch screen test
Sound for your headphones, earpiece, microphone, and headphones
Movement: gyroscope, accelerometer, compass
Connectivity: Wi-Fi, Bluetooth, GSM, GPS
Devices: light sensor, charger, vibration, proximity sensor, fingerprint sensor
Camera: front camera, main camera, LED flash.
And other tests
The app is very excellent, and may be very helpful when you want to buy a used phone and want to check if everything is working well.
Download link for Android system
Download link for IOS system