Can I back up my iPhone 5 13GB to a 16 GB flash drive?
Can I back up my iPhone 5 13GB to a 16 GB flash drive before upgrading to a 6?
iPhone 5, iOS 10.3.3, 12.57 GB used; 295.7 available
Can I back up my iPhone 5 13GB to a 16 GB flash drive before upgrading to a 6?
iPhone 5, iOS 10.3.3, 12.57 GB used; 295.7 available
Directions to backup iPhone How to back up your iPhone, iPad, and iPod touch - Apple Support
As you can see the backup will either go to iCloud or your iTunes library. It say nothing about the backup going to a flash drive.
You can backup via Wi-Fi using iCloud or iTunes USB with a computer but not a flash drive.
How to back up your iPhone, iPad, and iPod touch - Apple Support
No. You can either back it up to a computer using iTunes, or to iCloud. You can not back it up directly to a flash drive.
Can I back up my iPhone 5 13GB to a 16 GB flash drive?