My iPhone storage is almost full, and I found that Messages attachments are taking up a huge amount of space. I have years of photos, videos, and files saved in old texts, and deleting them one by one is taking forever. I need help finding the fastest way to remove large attachments on an iPhone without losing anything important.
I ran into the same mess on my iPhone. It got slow, apps kept dropping, and every small thing triggered the ‘Storage Almost Full’ alert. I spent way too long poking through storage menus and old threads until I figured out where Messages was hiding space.
How to remove message attachments in Settings
The built-in route is:
Settings > General > iPhone Storage
If iOS flags message files as a big storage chunk, you should see ‘Review Large Attachments.’ Open it, and Apple lists files from biggest to smallest.
Here’s the bad part. There’s no bulk delete button. No ‘Select All.’ You tap ‘Edit’ in the top corner, then pick items one by one. If your phone has years of photos, videos, voice notes, and random memes in Messages, it gets old fast.
If ‘Review Large Attachments’ does not appear, stay in iPhone Storage and tap ‘Messages.’ Scroll down and you should see categories like Photos, Videos, GIFs, and others. Open any section and remove files there. Same deal though, manual selection.
What happens with iCloud
This trips people up a lot.
If you use Messages in iCloud, deleting an attachment from Messages on your iPhone removes it from iCloud and your other Apple devices tied to Messages too.
But if you saved the same photo or video into the Photos app, deleting it from the message thread does not erase the copy in Photos. Those are treated separately. I checked this myself because I was paranoid about losing family pics. So before you start deleting stuff, save anything important to Photos first if it only exists inside a text thread.
Will deleting attachments erase the conversation
No. Removing a photo or video from a message thread does not wipe the text conversation itself. The chat stays there.
The bigger risk is a different setting:
Settings > Messages > Keep Messages
If this is set to 30 Days or 1 Year, iPhone will auto-remove older messages and attachments after that time. If you want old conversations to stay put, leave it on Forever.
Why storage space does not update right away
I hit this too. Deleted a pile of stuff, looked at storage, and it barely moved. Two things were going on.
First, deleted message items often sit in Recently Deleted for 30 days. You need to empty it yourself:
Open Messages > tap Edit or Filters near the top left > Recently Deleted > delete everything there
If you skip this, the files still take space.
Second, the iPhone storage screen updates slowly. Sometimes it hangs onto old numbers for a while. After a big cleanup, I restarted my phone and the free space count finally changed.
Why low storage makes the phone feel slow
Once my phone got close to full, it felt awful. Camera delay. Keyboard lag. Random app crashes. Clearing storage helped more than any little tweak I tried. iPhones seem to get grumpy when there isn’t enough room left for temp files and normal background stuff.
The faster route I ended up using
After doing the tap-one-circle routine for a while, I gave up and tried something else. I found Clever Cleaner through this video:
I’m usually suspicious of cleaner apps because a lot of them are junky, full of ads, or locked behind subscriptions. This one felt less annoying than most.
What helped me most was the Heavies section. It showed my biggest videos and photos first, with file sizes visible right away. I found a bunch of giant 4K clips I forgot existed. Those were chewing through storage more than message attachments, if I’m honest.
There’s also a Similars section, which helped with duplicate and near-duplicate photos. I had whole batches of the same blurry dog pic and five versions of the same receipt. It cut down the library faster than doing it by hand.
One thing I cared about was privacy. From what I saw, it processes data on the phone itself, not by shipping your photo library off somewhere else. After clearing around 20 GB, my iPhone stopped stuttering and crashing so much. Felt normal agian.
Short version
If you want the Apple method, use iPhone Storage and delete attachments manually.
If you use Messages in iCloud, deletions sync across your Apple devices.
Deleting attachments does not remove the text conversation.
Check Recently Deleted or your storage number might not change.
If manual cleanup is driving you nuts, the YouTube link above covers the app route I ended up using.
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You don’t need to sit there deleting every photo bubble in old threads. The faster move is to change how long Messages keeps stuff.
Go to Settings, Messages, Keep Messages, then switch from Forever to 1 Year or 30 Days. Your iPhone will remove older messages and their attachments in bulk. This is the closest thing Apple gives you to mass cleanup. It’s blunt, but it works fast. If your Messages data is 20 GB or more, this often cuts a huge chunk in one shot.
I differ a bit from @mikeappsreviewer on one point. I would not keep Messages on Forever unless you truley need a full text archive. For most people, Forever is why storage gets wrecked.
Two more tricks.
-
Delete entire heavy conversations.
Open Messages, find threads full of videos or group chats, swipe left, delete. One old family chat with years of videos can eat several GB. -
Save what matters first, then purge.
If there are photos you care about, save them to Photos or Files first. Then remove the thread or shorten message retention.
If your photo library is also bloated, Clever Cleaner helps more with large videos, duplicates, and similar shots than Messages cleanup does. Different problem, same storage pain. I found this review useful for figuring out whether it was worth trying:
read this Clever Cleaner app for iPhone review
Short version. Apple has no true Select All for message attachments. Your best bulk option is deleting old conversations or changing Keep Messages. Kinda dumb, but thts the system.
Honestly, I’d add one thing neither @mikeappsreviewer nor @cazadordeestrellas really leaned on enough: search your Messages app like a hoarder detective before deleting anything.
Type stuff like:
- “.mov”
- “IMG”
- “video”
- big group chat names
- old contact names who spammed attachments
Sometimes the fastest cleanup is nuking 3 to 5 monster conversations instead of picking through 800 tiny files. Apple’s attachment management is weirdly clunky, so I slightly disagree with the “just use Keep Messages” advice as the best answer for everyone. That setting is kinda scorched-earth. If you still want old texts, deleting entire garbage threads is more controlled.
Also check shared media inside specific convos:
tap contact/group name > see all photos/files > select batches there. Still not perfect, but way faster than scrolling the whole thread like a caveman.
One more thing people forget: if those attachments were forwarded or downloaded into Files, deleting them from Messages won’t touch the Files copy. So look in Files app too, esp Downloads.
If your storage mess is bigger than just Messages, Clever Cleaner is probly more useful for the overall cleanup. It’s better framed as an iPhone storage cleaner for large videos, duplicate photos, and similar junk, not just a Messages tool. I found this take on why it stands out as a free iPhone cleanup app worth reading:
why Clever Cleaner is one of the best iPhone cleanup apps for freeing storage fast
Apple really should’ve added “Select All” years ago. It’s kinda ridiculous tbh.
I’d skip the attachment-by-attachment grind and use a Mac or iPad if you have one. That’s the one angle @cazadordeestrellas, @codecrafter, and @mikeappsreviewer didn’t really stress enough.
With Messages on Mac, big cleanups are often faster because:
- keyboard and trackpad make multi-select less painful
- deleting whole media-heavy threads is quicker
- if you use Messages in iCloud, those deletions sync back to iPhone
Also, check top offenders outside Messages before going nuclear. A lot of people blame text attachments, but the real hog is usually the Photos library, downloaded videos, or Files app duplicates. In that case, Clever Cleaner makes more sense than trying to force Messages into being manageable.
Clever Cleaner pros
- good for large videos and duplicate/similar photos
- faster overall storage cleanup than poking around iOS menus
- useful if your problem is broader than Messages
Cons
- not a true Messages attachment bulk deleter
- you still need to review what it suggests
- less useful if Messages is the only thing eating space
One small disagreement with the “just change Keep Messages” camp: that’s efficient, but kinda overkill if you want old texts for records. I’d archive important stuff first, then trim from another device or clean the rest of the phone globally. Apple still makes this way harder than it should be.