Environmental requirements

The iOS Mobile Messaging SDK version 3.9.3 is compatible with Xcode 10.2.1, Swift version 5.0.1 (swiftlang-1001.0.82.4 clang-1001.0.46.5), and supported on iOS versions 10 through 12.

Bug fix

The First Time Ever Welcome Message displayed randomly throughout a conversation. Exposed the Welcome message API to Objective-C