iPhone storage being overrun by System Data

Question

iPhone storage being overrun by System Data

I have 128 GB of storage for my iPhone 16 and currently 66 GB of it is being taken up by system data. iOS takes up 19. I have done everything from backing up my photos on a separate cloud to free storage and deleting apps, but no matter what I do my storage fills back up and it messes with my phone's functionality. Messages glitch out, apps won't load, etc. because I only have 1 GB free. I'm seriously at my limit with these and need help on how to clear that System Data because my phone is becoming unusable.

iPhone 16, iOS 18

Posted on Sep 10, 2025 10:30 AM

Reply

Answer 1

Top-ranking reply

LD150

Level 10

103,332 points

Sep 10, 2025 10:33 AM in response to cowboylikeme111

Only one way that I know of…

You need to Back up the phone

Erase all content & settings

Set up the phone again, restoring the backup.

there is some risk so ensure you learn how to perform this.

Back up iPhone - Apple Support

Erase iPhone - Apple Support

Set up your iPhone or iPad – Apple Support (UK)

Reply

Answer 2

Sep 10, 2025 10:34 AM in response to cowboylikeme111

Just backing up your iPhone won't remove system data. But backing up your data, then restoring your data from backup to your phone will. See how to do that here --> Restore your iPhone, iPad, or iPod touch from a backup - Apple Support

Reply

iPhone storage being overrun by System Data

Similar questions