minimum OS versions for mobile app

src/misc/troubleshoot/index.md

@@ -6,6 +6,7 @@ Did you encounter an issue when using <MainPlatformNameLink />? Here are some tr
 - Do you have enough storage? Check your [subscription and data usage](../../manage/dashboard/#subscriptions).
 - Are you missing some data after synchronisation? [How to Recover Missing Data](../../manage/missing-data/) will show you how to deal with [**conflict files**](../../manage/missing-data/#there-are-conflict-files-in-the-folder) and how to [**manually download**](../../manage/missing-data/#there-are-no-conflict-files-in-the-folder) data from your mobile device.
 - Modifying data schema of survey layers is a common source of synchronisation issues. [How to Deploy Revised Projects](../../manage/missing-data/) will instruct you how to do it correctly.
+- Unable to install or update <MobileAppName />? Check the [OS version](#minimum-os-versions-for-mergin-maps-mobile-app) of your mobile device. 
 - If <MobileAppName /> cannot open your project or form, see [How to Fix a Broken Project](../../field/broken-project/).
 - If <MobileAppName /> displays **PROJ error**, see [Custom Projections](../../gis/proj/).
 - For troubleshooting custom server deployments, look at [this dedicated page](../../server/troubleshoot/).
@@ -35,6 +36,15 @@ If you have an active <MainPlatformNameLink /> subscription or during the trial
 - See [GIS Stack Exchange](https://gis.stackexchange.com/questions/tagged/mergin-maps) with "<NoSpellcheck id="mergin-maps" />" tag to ask questions and see other users' answers.
 - See <QGISHelp ver="3.22" link="user_manual/index.html" text="QGIS documentation" /> for QGIS Desktop related problems.
 
+## Minimum OS versions for Mergin Maps mobile app
+
+The <MobileAppNameShort /> currently supports following OS versions:
+- **Android 9** or above
+- **iOS 16** or above
+- Windows 10 or Windows 11
+
+If your mobile device uses an older version of OS, you may be unable to install or update the <MobileAppNameShort />.
+
 ## How to share your project with Mergin Maps support
 
 Sometimes it is useful to share your project with our support team so that they can help you solve your issues.

src/setup/install-mobile-app/index.md

@@ -7,6 +7,10 @@ Download <MobileAppName /> to your Android device, iPhone or iPad. You can find
 
 <AppDownload></AppDownload>
 
+::: tip Supported OS versions
+The minimum OS versions requirements for the <MobileAppNameShort /> are **Android 9** and **iOS 16**.
+:::
+
 You can use the <MobileAppNameShort /> without having a <MainPlatformName /> account. Our [Capturing Your First Field Data](../../tutorials/capturing-first-data/) tutorial will show you how to create a project and capture your first data in the field.
 
 However, to make full use of <MainPlatformNameLink />, we recommend you [signing up to Mergin Maps](../sign-up-to-mergin-maps/). When sign in, you can use <DashboardLink /> to, e.g., manage your projects and share them with other users, or use our <QGISPluginNameShort /> to get your data and projects to <QGIS link="en/site/forusers/download.html" text="QGIS" />.
@@ -20,5 +24,5 @@ These tutorials cover all the basics from capturing data in the field, opening t
 ## Mergin Maps mobile app on Windows
 If you want to use the <MobileAppNameShort /> on Windows, you need to download the <NoSpellcheck id=".exe" /> installer from <GitHubRepo id="MerginMaps/mobile/releases/latest" desc="MerginMaps/mobile" /> repository and install it on your computer.
 
-
+The <MobileAppNameShort /> requires using Windows 10 or Windows 11.