SIMATIC WinCC OA UI3.21.5 - App Store

Stay in control of your SIMATIC WinCC OA plant - anytime, anywhere - with the WinCC OA UI App on your smartphone or tablet. Whether you're in the office, on the move, or on-site, you can monitor and intervene in real time.

The app provides the same powerful functionality as the familiar desktop user interface - secure, reliable, and optimized for mobile use.

Key Benefits at a Glance:
- Flexible Remote Access: Monitor and control your plant from anywhere.
- Multiple System Connections: Easily switch between different WinCC OA systems.
- Secure Data Transmission: Connect via HTTP or HTTPS with optional SSL encryption.
- Intuitive Operation: A familiar interface designed for mobile devices.

Note:
By downloading this app, you agree to the associated license agreements.

Version History Updated to latest WinCC OA version 3.21
Enhanced compatibility with the latest WinCC OA features 3.21.5 Aug 21 Updated to latest WinCC OA version 3.21
Enhanced compatibility with the latest WinCC OA features 3.21.4 Jul 8 Updated to latest WinCC OA version 3.21
Enhanced compatibility with the latest WinCC OA features 3.21.3 May 28 Updated to latest WinCC OA version 3.21
Enhanced compatibility with the latest WinCC OA features
Upgraded iOS SDK to version 26.2
Improved Mobile UI startup performance when using OIDC authentication
Updated Qt framework to version 6.8.6 3.21.2 Apr 10 Upgrade to WinCC OA Version 3.21
Extended compatibility with new WinCC OA features
Improved stability and future readiness
- App crashes on iOS at Qt login dialog for HTTP authentication at WinCC OA web server
- Connection to older SSA server projects not possible with 3.21 release version of the app (3.21, main)
- Sending log files to the web server does not work when connecting via Azure AD Application Proxy
- Integrate Intune SDK into support/3.21 branch 3.21.1 Mar 4 - General improvements and bug fixes 3.20.9 09/26/2025 The performance when opening the UI and cached panels is improved while using config entry “autoUpdateDir” for Desktop UI and Mobile UI. 3.20.7 06/12/2025 Fixed problems:
SVG image is incorrectly displayed in a table cell with pattern center when using MobileUI. 3.20.6 05/06/2025 Mobile User Interface App of the latest WinCC Open Architecture Version 3.20.

Fixed problems:Mobile UI can get unresponsive for some time after scrolling with touch gesture. 3.20.4 02/25/2025 Mobile User Interface App of the latest WinCC Open Architecture Version 3.20.
New Features:
The selected language settings for Mobile UI is stored on the device now.
Fixed problems:
When using the button "Send logfiles" in Mobile UI the "Accept Certificate" dialog is not shown.
Mobile UI could not transfer large log files to the server. 3.20.3 11/11/2024 General improvements and bug fixes 3.20.0 07/29/2024 Various bug fixes 3.19.10 04/17/2024 Various bug fixes
New Icon 3.19.8 12/20/2023 minor changes 3.19.4 07/24/2023 Minor updates and bugfixes 3.19.2 04/17/2023 New Version 3.19.0
Bug Fixes 3.19.0 12/14/2022 Bug Fixes 3.18.13 10/21/2022 Content:

• various new functions and properties for widgets
• bugfixes concerning some Widgets, WebView- and Maps-EWO

Limitations:

• ISO-languages are no longer supported by server version 3.17 or newer (only UTF-8 based languages)
• Login-HOOK functions are no longer supported. 3.18.12 09/01/2022 Content:
• various new functions and bugfixes

Limitations:
•ISO-languages are no longer supported by server version 3.17 or newer (only UTF-8 based languages)

•Login-HOOK functions are no longer supported. 3.18.11 07/22/2022 Various Bugfixes and features. 3.18.10 06/15/2022 Various Bugfixes. 3.18.9 04/12/2022 various new functions
bugfixing 3.18.7 02/22/2022 -Bugfixing
-various new functions 3.18.6 12/19/2021 -various new functions
-bugfixes 3.18.5 11/25/2021 -various new function
-bugfixes 3.18.4 09/29/2021