I have a list of contacts saved in an Excel file (.xls/.xlsx) that contains names, phone numbers, email IDs, and addresses. I tried to open or import this Excel file directly on my Android phone and iPhone, but the contacts are not showing up in the Contacts app. On some devices, the file opens only as a spreadsheet, and on others, it does not import at all. Why can not Excel contacts be opened directly on Android or iOS devices? Is there a proper way to import Excel contacts into my phone so th...