How can I sync worlds from my phone to console?
Solution 1:
Turn the world on pocket edition to a .mcworld file.
You can do this by zipping all content from the world file in file explorer on the iPhone, and then renaming the file from "yourWorldName.zip" to "yourWorldName.mcworld. You should be able to find the original world file under "games/mojang/minecraftworlds/yourWorldName".
This type of file can be opened by any device, so you can import it to your switch.