Images and the pictures we take are things we want to keep with us for as long as possible. Pictures in particular are the main concern when transferring over to a new phone. Will they transfer? Will I lose any in the process? How will they be organized?
The thing is, Apple to Apple there is no issue, simply sign into your iCloud and life is good. I'm sure between Android devices is a similar situation. However, when going from Apple to Android or vice versa, there is some grey area of unknown.
Google was clever enough to provide a converter along with the Pixel which, for the most part, was able to copy over my phone perfectly down to the wallpaper. Unfortunately there is one thing that did not go as smoothly, pictures.