1. ZTE Nubia My Prague (nx513j)
2. OS: Android 5.1, nubia UI 3.0, NX513J_RUCommon_v1.01
3. Asahi Kasei Microdevices (AKM) AK4375 audio chip
http://gsmarena-mobile-phones.blogspot.ru/2015/08/zte-nubia-my-prague-4g-fdd-lte-mobile.html
http://gsminsider.com/2015/07/zte-nubia-my-prague-full-phone-specifications/
audio_policy.conf