It can be frustrating when a user finds an unfamiliar application on their Android phone, since there's a chance they did not install it themselves. CQATest app is an embedded diagnostic application installed on certain Android phones to help manufacturers and service professionals conduct hardware tests before or after any possible repairs. This application is not meant for end-users and usually remains unnoticed on the phone until an update or other diagnostic processes make it visible to the user.

The application checks the quality of performance of various hardware components such as camera, speakers, touch screen, sensors, Wi-Fi, Bluetooth, GPS, microphone and other features. Usually, finding an application like this doesn't mean that the phone is infected with malware or that there has been some unauthorized access.