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Developing an app for iOS 12 with the need to access a Linux Firebird server the lastest release of UniDAC
with RAD-Studio 10.3 Rio shall be used.

- IBToGo Lite license is registered
- necessary libraries for provisioning added

With a minimal test app (TUniDAC connection + TInterbaseProvider) and hard coded credentials access to the
remote database is no problem from within the IDE.
But compiled and run on iOS and on trying to connect just get an an exception SIGABRT (6) with no further
information available.

Any help ?

You cannot connect a Firebird server from iOS device using UniDAC, because Firebird does not officially support iOS. We will add support for Firebird under iOS as soon as iOS supports mobile operating systems. You can connect to InterBase from an Android and iOS device. InterBase supports mobile operating systems starting from InterBase XE3. You can connect to Android-based Firebird 3 using UniDAC. Support for Andriod-based Firebird is added to UniDAC 7.1.3 as of 19-Sep-17