I'm trying to save a vCard on the user's phone (IOS and ANDROID). I'm using this code

window.addEventListener("load", function () {
  // Contact Information
  var contact = {
    ...
  };
  // create a vcard file
  var vcard = "BEGIN:VCARD\nVERSION:3.0\n"
    + "N:" + contact.name + ";;;\n"
    + "FN:" + contact.name + "\n"
    + "TEL;CELL:" + contact.phone + "\n"
    + "TEL;CELL:" + contact.mobile + "\n"
    + "EMAIL;HOME:" + contact.email + "\n"
    + "ADR;HOME:" + contact.address + "\n"
    + "ORG;WORK:" + contact.organization + "\n"
    + "TITLE:" + contact.title + "\n"
    + "URL:" + contact.url + "\n"
    + "NOTE:" + contact.notes + "\n"
    + "END:VCARD";  
  
  // var vcard = "BEGIN:VCARD\nVERSION:4.0\nFN:" + contact.name + "\nTEL;TYPE=work,voice:" + contact.phone + "\nEMAIL:" + contact.email + "\nEND:VCARD";
  var blob = new Blob([vcard], { type: "text/vcard" });
  var url = URL.createObjectURL(blob);
  
  const newLink = document.createElement('a');
  newLink.download = contact.name + ".vcf";
  newLink.textContent = contact.name;
  newLink.href = url;
  
  newLink.click();

  // window.close();
});

It works, but this code on Android phones first downloads the vcard, then the user needs to click download to import. What I want is that when the user comes to this page, my contacts are automatically saved on Android without downloading any files. (On iOS this is not a problem as when users visit this site they are automatically redirected to import contacts)

Note: I have broadcast an example with a QR code before. When I scan the QR code they redirect me to import contacts and all I need to do is click save

I want the same thing as https://www.qr-code-generator.com when the vCard tab is clicked. But when the page reloads, the QR code is not scanned