I was using 11 pro max before. Recently purchased 12 pro max. While the time I was transferring all the data’s from 11 to 12 the system storage I was used in 11 pro max was 58 GB out of 256 . When I transferred the same to 12 pro max the system strobe shows 222 GB out of 256. How that 58 turned to 222.
I am not sure where did you see 58 GB and where are you seeing 222 GB.
I am also not aware of the transfer process used by you.
iCloud by default, only has 5GB of storage space for your backup.
When you get a popup message on your iPhone or iPad that the storage is full.
Look closely storage of iPhone and iCloud.
You cannot increase storage of iPhone. However you can optimise iPhone Storage by using iCloud Storage. Save space on your device
Settings > [your name] > iCloud Tap Photos > Choose Optimize [device] Storage Set up and use iCloud Photos - Apple Support
iCloud storage is primarily for keeping a copy of your iPhone data safely on cloud. If you delete data on iPhone, data on iCloud is gone.
iPhone Storage (Setting > General > iPhone Storage)
iCloud Storage (Settings > [Tap your name] > iCloud)
I am not sure where did you see 58 GB and where are you seeing 222 GB.
I am also not aware of the transfer process used by you.
iCloud by default, only has 5GB of storage space for your backup.
When you get a popup message on your iPhone or iPad that the storage is full.
Look closely storage of iPhone and iCloud.
You cannot increase storage of iPhone. However you can optimise iPhone Storage by using iCloud Storage. Save space on your device
Settings > [your name] > iCloud Tap Photos > Choose Optimize [device] Storage Set up and use iCloud Photos - Apple Support
iCloud storage is primarily for keeping a copy of your iPhone data safely on cloud. If you delete data on iPhone, data on iCloud is gone.
iPhone Storage (Setting > General > iPhone Storage)
iCloud Storage (Settings > [Tap your name] > iCloud)
If you have used backup from either iCloud or iTunes then
Watch the iTunes BackUp Size on a GIF below
Note this is a compressed backup size. (During restoration it will expand)
See the GIF which shows as 28.03 GB used space on iPhone 6 and the Backup Size id 5.26GB
Same is true for iCloud Backup too. What you see the size is compressed Size
iCloud backup size on iCloud is 3.5 GB for the same iPhone same date that is because iCloud backup doesn’t include information that are synced and stored in iCloud, like Contacts, Calendars, Bookmarks, Mail, Notes, Voice Memos, shared photos, iCloud Photos*, Health data, call history, and files you store in iCloud Drive.
*-If you had turned on iCloud Photos, your content is automatically stored in iCloud.
Watch the GIF below
What does iCloud back up? - Apple Support
Storage
