S.Galaxy 7 - Can't install .apk

Hi! I am making an app for mobile devices but it doesn’t work on S7. I don’t understand why, I have signed the .apk, and it works on other devices, S4 for example. The packaging is ok, but when I try to install on S7 I can’t, the installation is falied. Why?
I used this combinations:
Android minimun SDK 9, and target SDK 19. SDK api: 19 and NDK api: 19
Android minimun SDK 19, and target SDK 21. SDK api: matchndk and NDK api:android 21

Which texture format you used to package your project?