SAP Business One mobile app for Android 1.2.15 is ...
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Since November 20 2019 a new version of the mobile app for Android is available on Google Play.
Some general information:
The app demo mode offers a direct login option to a SAP Business One server, powered by SAP HANA in Germany so everyone can try out the app directly under almost real conditions.
SAP Partners and customers can also access SAP Note 1924930, 'SAP Business One mobile app for Android - Troubleshooting and compatibility information'.
The creation of self-signed SSL certificates for mobile apps can be automated using the Certificate Tool. Check this blog