I want to communicate from my Android app to a Java Card applet loaded on a SIM card using APDUs under Android prior to 5.0 (4.2.2, for example). My applet is not a SIM Toolkit applet, it is a common Java Card applet.
Following this post (thanks to @vojta and @jean) and SEEK I would like to build my app using RIL (Radio Interface Layer). Where can I get those libs? The only ones I can get is for Nexus - here.
If I understand it well I will have a different .apk file for each mobile manufacturer. Am I right? If yes, is there any other way to communicate from Android to SIM applet apart from SEEK?
If I cannot avoid that (I really think SEEK is the best or the only way to communicate with my SIM applet), can someone share a step-by-step manual for building such an example APK application (including communication with the applet)?