Update Pop up not shown in Ios. why?

[lakshydeep-14]

Update popup not shown.
Here is my code:

info() async {
    var a = await PackageInfo.fromPlatform();
    setState(() {
      packageInfo = a;
    });
    final newVersion = NewVersionPlus(
      iOSId: packageInfo!.packageName,
      androidId: packageInfo!.packageName,
    );

    if (!simpleBehavior) {
      basicStatusCheck(newVersion);
    } else {
      advancedStatusCheck(newVersion);
    }
  }