User level: Level 1 (4 points)I have only 64GB of storage in my iphne SE when I upgrade to the OS 26.0.1 IOS took 12.5 GB and system data 40.23 GB so I left only 11.3 GB so it's very difficult to manage it. However, is it possible to downgrade the OS version?
Posted on Oct 1, 2026 4:54 AM
User level: Level 10 (233,174 points)Oct 1, 2026 5:06 AM in response to rajashekhar21
rajashekhar21 wrote:
I have only 64GB of storage in my iphne SE when I upgrade to the OS 26.0.1 IOS took 12.5 GB and system data 40.23 GB so I left only 11.3 GB so it's very difficult to manage it. However, is it possible to downgrade the OS version?
No, it is not possible to downgrade iOS. It has never been supported. The reality is 64 GB is just not enough anymore today. No brand new iPhone Apple sells today come with less than 256 GB out of the box.
System is a collection of data, such as Cache, Files, Logs, and Resources that help iOS run smoothly but don't fit into standard categories like Apps, Photos, or Media. Typically it will occupy anywhere from 8 - 20+ GB of data and usually we don't need to do anything to manage it. But sometimes, System Data can contain some corrupt data and in your situation, that may be the case.
You can backup your iPhone, then restore it from Backup, which will usually reduce System Data. But over time, it will continue to grow. It's at least one way to regain some storage.
See how to do that here --> Restore your iPhone, iPad, or iPod touch from a backup - Apple Support
I would, if I were you, give serious consideration to upgrading your iPhone to a newer iPhone, which will come with much more storage. Once purchased, storage on the phone can never be increased.
Originally posted at discussions.apple.com/thread/256368409