What is CTS testing?

CTS testing refers to the Compatibility Test Suite, a set of tests used primarily in the Android ecosystem to ensure that devices are compatible with the Android operating system. Manufacturers use CTS testing to verify their devices meet Google's standards for functionality, performance, and security. Passing the CTS is necessary for devices to be officially recognized as Android-compatible and to gain access to Google Mobile Services. This process helps maintain a consistent user experience across different hardware manufacturers.