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How to establish iOS compatibility in the application

I just sent the application for distribution when it showed the following message: “The binary file downloaded for the latest version of this application indicates that iOS 4.3 or later is required. Applications that require iOS 4.3 or later will not be available for Verizon iPhone users: If this app may be compatible with earlier versions of iOS, you may need to reject the binary and download a new one that indicates the earliest compatible iOS. "

I would like to make the verizon application compatible if the process is fast.

If I just changed the goal of deploying IOS in my project to 4.0, should this be normal?

Thank.

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2 answers

It should, if you have not used some too recent functions, obviously.

Update: here's a checklist from white papers on what's new in iOS 4.x

  • Game center
  • Print
  • Airplay
  • Various improvements (iAd, Media Player, etc.)
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It depends on what framework and other functions you use with your application and whether they are compatible with iOS 4.0. If the functions are incompatible, you can disable them for earlier versions using a “weak connection” . If possible, test the application on the device using iOS version earlier than 4.3.

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