I just bought a 6+. My wife is going to take over my 5. How do I make the da...
Backup your iPhone 5 via iTunes or iCloud, and during the initial setup of the iPhone 6 Plus, you will be asked if you want to restore from a backup. Choose to restore from the backup you just made. It will automatically show the last backup made with iTunes or iCloud.
After you've restored the iPhone 6 Plus with the backup of the iPhone 5, get the iPhone 5, and dig out of EVERYTHING ( iCloud, iMessage, FaceTime, iTunes & App Store, etcetera,) make sure you disable Find my iPhone. Afterwards, go to Settings - General - Reset and then select Erase All Contents and Settings. When the process is complete, you will be taken to the Welcome screen. Give the device to your wife to set it up as she sees fit.