iphone
I have an appointment today for a new iphone. The problem is that my current iphone 6 has no battery left and I can't get it to charge. So how can I transfer the data for my current phone to the new one.
iPhone 6, iOS 12
see if these support articles help
Locate backups of your iPhone, iPad, and iPod touch - Apple Support
Restore your iPhone, iPad, or iPod touch from a backup - Apple Support
I'm not sure if you can use your MacBook to restore from an iCloud backup.. but you can do it directly by connecting the new iPhone to WiFi