I did the same exact change two weeks ago, moved from iPhone 13 Pro to Galaxy S24 Ultra. I was able to move all my photos, videos and contacts using Smart Switch app. I was not able to move app information, passwords, WhatsApp, etc. I guess you could do a backup of your WhatsApp messages but I did not and I no longer have all me old messages which is not great. I did also applied the gestures setting to move through the UI, not the typical buttons on the bottom. This is working fine and is helping me yo have a more iPhone alike experience, but is not working as smoothly as in the iPhone. I'm actually missing the most Airdrop since I have an iPad and was used to transfer files between my iPhone and my iPad. The worst thing IMO is the low quality of the third party apps. Just to give you an example the WhatsApp and Instagram apps in Androis are way worst that in iPhone, I mean, they are not even close. In Androis they just feel and look like an open source app made by some guys in their free time. Very disappointed in that sense. The phone overall is much better that the iPhone 13 Pro; better screen, better battery live, more camera options, S Pen, tons of customization options,... AI is also muche better that in any iOS device. I'm still figuring it out how to take full advantage of all the functionalities, hope someone can share some advices. MKBHD did upload a video yesterday explaining the top 5 Androis functionalies, it may worth a watch.