I am in process of migration iphone 7 plus to a a iPhone 11. I use the secure encrypted backup from my PC to restore the new iPhone 11. It took a long long nearly 3 hours maybe about 2.5hrs. I heard that the new wireless migration process (putting the old iPhone 7 beside the iPhone 11) will be just under 15 mins. Is that process the same as doing the encrypted backup? Then why people do that backup process then on the PC??