SDK issues for release in Xcode 9 - ios

SDK Version Issue.
This app was built with the iOS 11.4 SDK. All iOS apps submitted to the App Store must be built with the iOS 11 SDK or later,
included in Xcode 9 or later. Further, starting March 2019, all iOS apps submitted to the App Store must be built with the iOS 12.1 SDK or later,
included in Xcode 10.1 or later.
I got this issue on release the app to app store.How can I try to solve this?
My development target is 11.4 in Xcode 9
When I tried to change developemt target to 12.1 then I got another more issue

Related

ERROR ITMS-90725 Building with Xcode 13.4.1

ERROR ITMS-90725: "SDK Version Issue. This app was built with the iOS SDK. All iOS apps submitted to the App Store must be built with the iOS 15 SDK or later, included in Xcode 13 or later.
I'm building with Xcode 13.4.1 so it should be using iOS 15.x, right? And why does it only say This app was built with the iOS SDK? What version of iOS does it think I'm using? I've seen others reporting this error message but it indicates which version of iOS it's using, eg, "This app was built with the iOS 14.5 SDK".
Is there any way Xcode 13.4.1 is not using iOS 15? This is the only version of Xcode I have installed at the moment.

SDK Version Issue in iOS 12.2 SDK

While uploading the app into test flight I'm getting this below error
This app was built with the iOS 12.2 SDK. Starting April 2020, all iOS
apps submitted to the App Store must be built with the iOS 13 SDK or
later, included in Xcode 11 or later.
Xcode Version 10.2.1
Swift Language version: Swift 5
Deployment target: 10.0
you already answered yourself,
Store must be built with the iOS 13 SDK or later, included in Xcode 11 or later.
so just update your xcode

Do I need to wait for Xcode 10.3 to test on iOS 12.3?

Currently iOS 12.3 is released and latest version of Xcode is 10.2.1
I want to know to test my app on my physical device with iOS 12.3 I need to wait for Xcode 10.3 or is it possible to deploy apps using Xcode 10.2 on iOS 12.3?
I did not update my phone iOS and keep its version 12.2 since I don't know the answer to this question.
iOS 12.4 Beta 2 Release Notes
The iOS 12.2 SDK provides support for developing iOS apps for iPhone,
iPad, or iPod touch devices running iOS 12.4. The SDK comes bundled
with Xcode 10.2.1 available from the Mac App Store
iOS 12.3 Release Notes
The iOS 12.2 SDK provides support for developing iOS apps for iPhone,
iPad, or iPod touch devices running iOS 12.3. The SDK comes bundled
with Xcode 10.2.1 available from the Mac App Store.
Reference:
iOS 12.4 Beta 2 Release Notes
iOS 12.3 Release Notes

Publishing to App Store using older Xcode version

What happens to an app that's published to the App Store using an older version of Xcode?
Let's say we're on Xcode 9 with comes with iOS 11 then I'm publishing the app built targeting iOS 11.
Will people with iOS 12.2+ be able to download the app even-though iOS 12.2+ was not part of Xcode 9?
ps: I know I can have multiple version of Xcode on the same machine so this is not an answer.
As per Apple:
Starting March 27, 2019, all iOS apps submitted to the App Store will need to be built with the iOS 12.1 SDK or later, and support the all-screen design of iPhone XS Max or the 12.9-inch iPad Pro (3rd Generation). All watchOS apps will need to support watchOS 5 and Apple Watch Series 4.
While your app would run fine on any iOS version later than the targeted build version, Apple will reject your submission if not built with Xcode 10.1 or later. That being said, you can set your target version to iOS 10.0, for example, without issue. You do not have to target iOS 12.1, you just need to build with the 12.1 SDK.
See also: App Store Connect Supported Xcode versions

React-Native and xcode 10 - Set Base SDK to 12.1 but compiles to 11

I can't update my app on the app store because it won't compile with SDK version 12.1.
Everytime I try to upload my app I get this message:
SDK Version Issue. This app was built with the iOS 11.2 SDK. All iOS apps submitted to the App Store must be built with the iOS 11 SDK or later, included in Xcode 9 or later. Further, starting March 2019, all iOS apps submitted to the App Store must be built with the iOS 12.1 SDK or later, included in Xcode 10.1 or later.
In my project settings Base SDK is set to ios 12.1
After reading other issues like this, I have also deleted xcode 9 from my computer. But still nothing is working.
Any idea what is forcing my app to compile with 11.2?
After uninstalling xcode 9, I had to re-install xcode 10.

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