iPhone version: Up-to-Date (iOS - 10)
I have more than 10,000 contacts in my phone.
I recently tried to transfer them to a new [i]phone but with no luck... The backup is sitting in my email as a .vcf file.
My method of uploading the contacts to the phone is: Mail App-> "Backup June 27"->Download the File-> To contacts -> Crashes at this point.
I don't have a save on iCloud.
So, I was wondering: what are all the ways (which might include Windows or Mac and so they are included) to upload a backup to an iPhone?