Jo, he posteado en XDA Developer mi problema con la activación de las SIM y me han contestado esto:
"That is because in Marshmallow qualcomm decided to move certain parts of their framework/opt/telephony to closed source qt-telephony-common.jar breaking the SIM detection and more. Though it can be ported from 12.1 with some "efforts" (putting back legacy functions and more), but as it is by no means a show-stopper issue, developers are rather focusing on the more major ones."
Y si entiendo un poco lo que explica, más o menos viene a decir que tienen cosas más importantes que hacer que dedicarse a esta mierdecilla mía.

