By far the worst part of moving to iOS from android. The application is horrendous and that is being generous. Attempted on phones for over 8 hours with multiple transfers interrupted or failed (several at 1 minute remaining) despite no network service on the old phone to cause interference, multiple Wi-Fi attempts on different networks, ensuring both phones never go to sleep mode, only attempting text message transfer to limit file sizes, and several chats with apple support. It’s baffling how this process could be so challenging to perform. Eventually quit attempting this transfer process (with 8 hours invested) and moved to the new phone with nothing transferred over.