Regarding the APK installation in the mobile phone

I have done one project in the MIT APP Inventor (Simple), Generate the APK and tried to install on mobile the error occurs "App not installed"

Two possibilities

  • Screen 1 icon rejected
  • Android security needs to be overrided

Look for a More Information link in the rejection notice for the override or in the phone Settings app.

Dear @Bhagawan_Shahasane,
in additon to what @ABG has already said, please be aware that if you have created the same apk with two different accounts or if you have used two different development servers (i.e.
AI2.appinventor..... or Code.appinventor...) the same error is raised. In this case you shall unistall any previously installed version from your target device.

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