This paper examines the security, legal, and operational implications of utilizing the , a modified version of the Call Recorder - SKVALEX application. 1. Abstract
Starting with Android 9 and culminating in strict policy changes in Android 10 through 14, Google heavily restricted the accessibility APIs used by third-party apps to record phone calls. This was done to protect user privacy and comply with regional wiretapping laws.
: The Android Package Kit file format used to distribute and install applications on the Android operating system. The Hidden Dangers of Installing Modified APKs