Here is an application that checks and detects the flaws of any phone before you buy it

Some of us may prefer to buy used phones because their price is very low on their price, which is new, but this has a lot of disadvantages as there may be some defects in the phones used over time that you did not notice when you wanted to buy them. To solve this problem can use an application called TestM When you want to buy a used phone where this application scans the phone and detects all defects and faults.

Where you will be able to apply TestM much when you buy a used phone where it will scan all parts of the phone, such as the screen, sound, communication, camera and many other parts, and the method of use is simple where you have to do is download it here on your Android phone, and then click start The application will scan the phone parts and create an integrated report on the phone.

This report includes touch screen test, microphone and microphone performance, motion sensor, light, vibration, etc., as well as communication quality such as Wi-Fi, Bluetooth and gps. It also checks the quality of the flash, the front camera and the background.
You can also use the phone to find shops selling or repairing used phones, which contains a map of all the shops near you...