Transferring data from a lower iOS device to a higher iOS device typically poses no problems and is generally a seamless process. For instance, if you have an older iPhone running iOS 12 and you decide to switch to the latest iPhone 13 with iOS 16, you can usually transfer your data without any major issues. This compatibility ensures a smooth transition, and most of your data, settings, and applications will be carried over successfully to the new device.
However, the reverse scenario can be more challenging. If your old device is running on a higher iOS version than the one installed on your new iPhone 13 say with iOS 16.0 (let's say your old device has iOS 16.4), you may encounter compatibility issues when attempting to transfer data directly. The two devices may not be fully compatible with each other due to potential differences in iOS features, data structures, and settings. As a result, you might get error messages or face difficulties during the transfer process.
To address this situation, the recommended approach is to update the new device's iOS to a version to the latest iOS version which is iOS 16.5.1(c).
Keep in mind that it's always essential to back up your data before any major updates or transfers, as unexpected problems can occur during the process. Additionally, staying on the latest iOS version available for your device ensures that you have access to the latest features, security updates, and bug fixes provided by Apple.