If I cancel my iCloud subscription, will all my storage convert to my phone’s storage automatically?

iCloud is a sync service, unless you have options like Optimize Storage turned on for Photos for example, then everything exists on your iPhone already.

If you are using the Optimize Storage Option, then turn it off in Settings ➜ Apps ➜ Photos ➜ Optimizer Storage.

This will download the full quality versions of photos and videos to the iPhone that were not already there.

For other content, go into the Files App, and copy any Files you want to keep from the iCloud Drive section on Browse, to the "On My iPhone" section.

If you have a computer, you can log in to https://icloud.com and download anything from there.

For more details click here ➜ Archive or make copies of the information you store in iCloud - Apple Support

Nope.

If you cancel iCloud+, anything exceeding 5GB will be deleted. Nothing will be downloaded to your device unless you manually download it.

Phil0124 wrote: …If you are using the Optimize Storage Option, then turn it off in Settings ➜ Apps ➜ Photos ➜ Optimizer Storage.

This will download the full quality versions of photos and videos to the iPhone that were not already there.

This is not exactly true for a Mac, and I imagine it's not true for a phone, but I haven't tried it. When "Optimize" is switched to "Download Originals," Photos brings in the larger original files as needed, and there's no easy way to tell if all the pictures' files have arrived, yet.

However, in any case, when you turn off iCloud Photos, there will be a scary warning sign

that then lets you either remove the preview versions or download the the originals. If you have room on your phone, then you should choose Download. If there's not enough room on the phone to handle all the big picture files, then you should use a computer to get them from iCloud.com.

I found it scary just to get to this point on my phone, but Cancel worked well…