Por si a alguien le interesa, hay un modulo Xposed que lo hace, lo probare y ya os diré.
http://forum.xda-developers.com/xpos...hemer-t3040537
EDITO: Iba a descargar el Xposed y segun parece no funciona en los Samsung...
Q: Does This work on Samsung ROMs?
A: It doesn't work on Samsung TouchWiz-based ROMs. It should work on AOSP variants however. Follow the link in Post 1 for the latest updates. No one in this thread has other sources of information about the support of Samsung TW roms.