Pavel Sturc Which version of android the test device is running? I think what might happen is that the app is still not using the user provided keystore because it doesn't have the network_security.xml file as we provided in the android showcase app: https://github.com/aerogear/android-showcase-template/blob/master/app/src/main/res/xml/network_security_config.xml.

Massimiliano Ziccardi We might need to add that file to the xamarin android showcase app to enable self-signed cert.