My iPhone keeps running out of storage and it’s slowing everything down. I’ve already deleted some apps and photos, but the “Other” or “System Data” section is still huge and I’m not sure what’s actually safe to remove. Can anyone share practical steps or hidden tricks to really free up space without losing important data or messing up my backups?
iOS storage is messy, so you are not crazy. Here is what usually helps most with “Other” or “System Data” without nuking the phone.
- Check where space really goes
Settings > General > iPhone Storage.
Wait a bit. Let it load.
Look at:
- Messages
- Media-heavy apps like Instagram, TikTok, WhatsApp, Telegram
- Mail
These often hoard cached junk.
- Messages cleanup
If you use iMessage a lot, this alone can free gigs.
Settings > Messages:
- Message History: set to 30 Days or 1 Year
- Under iPhone Storage > Messages, remove:
- Large Attachments
- Videos
- Old conversations you do not need anymore
-
Safari and browser junk
Settings > Safari > Clear History and Website Data.
If you use Chrome or another browser, clear cache inside that app too.
This eats into “System Data”. -
App cache reset trick
Apps like Instagram, Facebook, TikTok grow huge.
On the app list in iPhone Storage, tap an app.
- If the “Documents & Data” part is huge, delete and reinstall the app.
You keep your account. You lose cached media.
Good for streaming and social apps.
-
Offload unused apps
Settings > General > iPhone Storage.
Enable “Offload Unused Apps”.
iOS removes the app but keeps its documents.
Icon stays with a cloud sign. Tap to reinstall if needed. -
Photos cleanup the smart way
- Turn on iCloud Photos if you are ok with cloud: Settings > Photos > Sync this iPhone.
Choose Optimize iPhone Storage. - After deleting photos, go to Photos > Albums > Recently Deleted and clear that folder.
That space does not free up until you empty it.
- Big win: delete local downloads
- Spotify, Netflix, YouTube Music, Apple Music.
Check each app for offline downloads.
Remove playlists, albums, or shows you do not use.
This often frees multiple GB.
- “System Data” specific tricks
You cannot directly delete it, but you can shrink it.
Try these in order:
a) Restart
Plain restart sometimes drops cached logs.
b) Disable VPNs or profiles you do not use
Settings > General > VPN & Device Management.
Remove old profiles or VPN configs.
c) Reset Network Settings
Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings.
This clears some cached data related to networking.
You will need to re-enter Wi-Fi passwords.
d) If System Data is ridiculous compared to storage size
Example, 30+ GB on a 64 GB phone.
The only reliable fix is usually a backup and full restore.
Steps:
- Backup to iCloud or to a computer with Finder or iTunes.
- Settings > General > Transfer or Reset iPhone > Erase All Content and Settings.
- Set up iPhone > Restore from backup.
This often cuts “System Data” down a lot.
- Use a helper app to speed this up
If you do not want to dig through every app by hand, try a cleanup helper.
The Clever Cleaner App for iPhone focuses on:
- Finding duplicate and similar photos
- Grouping screenshots and blurred pics
- Listing large videos and media
- Helping remove junk in bulk, like old screen recordings or similar selfies
Here is the link, with more info on what it does and how it helps free storage fast:
speed up iPhone storage cleanup with Clever Cleaner
Use it to quickly scan and remove:
- Duplicate photos
- Similar bursts
- Heavy videos you forgot about
- Things that are not safe to mess with
- Do not try to delete system folders using a file manager.
- Avoid “iPhone cleaner” tools that need a computer and ask for weird permissions.
- Do not delete app data for banking or authentication apps unless you know logins and backup codes.
If you try all of that and storage still fills instantly, post your iPhone model, iOS version, and a screenshot of iPhone Storage breakdown. The pattern there tells a lot about what is bloated.
Yeah, iOS storage is kind of a clown show sometimes. @sonhadordobosque already nailed a lot of the basics, so I’ll skip repeating those same steps and hit a few angles they didn’t really focus on, plus where “System Data” actually bites you.
- Check what’s syncing in the background
A bunch of apps quietly keep offline copies of stuff you never asked for. Look especially at:
- Notes with tons of images or PDFs
- Files app with “On My iPhone” junk from years ago
- Messaging apps that sync cloud media locally over time
In Files, check:
- On My iPhone
- Downloads
Those folders can hide massive PDFs, ZIPs, and exports from random apps.
- Turn off “sync everything forever” in 3rd party apps
Some apps keep caches even after you delete and reinstall, by re-syncing everything again.
Inside each app’s settings, look for:
- “Keep media forever”
- “Save incoming media to device”
- “Auto-download photos/videos/documents”
Turn those off or limit them. Otherwise System Data just grows back like a bad haircut.
-
Watch out for iCloud Drive and “Desktop & Documents”
If you have a Mac and turned on “Desktop & Documents” in iCloud Drive, big files from your Mac can mirror onto the iPhone in some cached form.
On iPhone: Settings > your name > iCloud > iCloud Drive.
If you see huge usage there and never actually need those files on your phone, pare that down on the Mac side or disable some folders from syncing. -
Email attachments: nuke the fat threads
Mail is sneaky. Even if the Mail app doesn’t look huge, its cached attachments feed into System Data.
Instead of only clearing Mail settings, go into your actual inbox and:
- Sort by “attachments” (if your email provider supports that on web)
- Delete ancient threads with giant attachments
- Emptly Trash and Spam on the server side
Then give the phone some time plus a reboot to shrink the cached stuff.
-
iCloud backup bloat
Old app data inside iCloud backup can keep convincing your phone to hold on to junk.
Settings > your name > iCloud > Manage Account Storage > Backups > your iPhone.
Uncheck apps whose data you really do not care about restoring (random games, old utility apps).
Then do a fresh backup. Over time this can help keep System Data from rebuilding useless app data. -
When System Data is crazy big but you want to avoid full wipe
I slightly disagree with the “only reliable fix is backup and full restore” as the first option. It often works, yes, but before going nuclear, try this combo:
- Sign out of iCloud, wait, then sign back in
- Toggle iCloud services off and back on selectively: Photos, iCloud Drive, Messages in iCloud
Sometimes the sync layer is what bloats “System Data.” This is annoying and takes patience, but can shrink it without wiping everything.
- Cables and computer backups
If you have access to a Mac or PC, plug the iPhone in and look at storage from Finder or iTunes.
Sometimes it reports usage slightly differently than on-device, and you can:
- Make an encrypted backup (so passwords and health data are saved)
- Then restore from that backup
This is less intrusive than setting up as “new iPhone” but still tends to compress junk. If your System Data is over 20–30 GB on a small device, this is worth the hassle.
- Use a dedicated cleaner app for photos & videos
This is where I think a helper app is actually worth it, unlike those shady “deep cleaners” that mess with system files. You said you already deleted some photos, but manual cleanup is slow and easy to screw up.
A solid option is the Clever Cleaner App. It specializes in:
- Finding duplicate and near-duplicate photos
- Clumping together similar selfies and bursts
- Spotting huge old videos and screen recordings
- Helping you kill screenshots and blurry trash in bulk
That type of targeted cleanup removes gigabytes of user data, which indirectly shrinks what System Data needs to index and cache. If you want to try something focused and safer than random PC-based “iPhone cleaners,” check this out:
clean up iPhone storage and media clutter fast
- Be realistic about “System Data”
Some of it simply cannot be removed. iOS needs logs, caches, and frameworks. You are not going to get it to zero. The goal is:
- System Data under ~8–12 GB on a 64 GB phone
- Under ~15 GB on a 128+ GB phone
If yours is way above that after doing cache-heavy stuff, browser cleanup, big media cleanup, and maybe a restore-from-backup, then yeah, at that point a full erase and set up as new is the only way to fully reset the weirdness.
If you post an iPhone Storage screenshot sometime, you can usually tell what exactly is causing the bloat just by the pattern, not only the “System Data” bar.
