Comprehensive Guide to Transferring Data When Switching iPhones

This article provides a detailed guide on how to switch iPhones or iPads without losing any data. It emphasizes the importance of backing up your old device before making the switch, offering instructions for using iCloud or a computer for the backup process. The guide covers various scenarios, including using Quick Start for devices running iOS 12.4 or iPadOS 13.4 and newer, as well as alternative methods for older devices. It also addresses SIM card considerations, explaining the transition to eSIM for newer iPhones in the US. The article walks readers through the setup process, including restoring from backups and ensuring a stable Wi-Fi connection during the transfer. Additionally, it touches on handling two-factor authentication apps during the switch and provides tips for what to do with the old device after the transfer is complete.