An iPhone can automatically remove old Messages conversations after a chosen retention period. On an iPhone 7, selecting 30 Days can save storage, but messages and attachments older than that limit are deleted rather than merely hidden.
Keep messages for only 30 days
- Open Settings.
- Select Messages.
- Find Keep Messages.
- Choose 30 Days.
- Confirm the deletion warning if iOS asks whether older messages should be removed.
Back up anything important first
Save photos, videos, addresses, receipts, or other information you need from older conversations before changing the retention period. Do not assume that an iCloud backup will provide an easy permanent archive of individual messages.
Messages in iCloud can synchronize deletions
If Messages in iCloud is enabled on compatible devices, message changes can synchronize across devices using the same Apple Account. Deleting old messages for storage management can therefore have broader effects than clearing only one local copy.
Large attachments can be managed separately
If storage is the main concern but you want to keep conversation text, review iPhone Storage recommendations and large Messages attachments. Removing a few large videos may recover more space than deleting months of small text messages.
You can change the retention period again
Returning Keep Messages to one year or forever affects future retention but does not restore messages that were already permanently removed.
The iPhone 7 cannot run current iOS releases. Newer iPhones may place Messages settings under Settings > Apps > Messages, but the retention concept remains similar. For important records, maintain a deliberate archive outside a short automatic deletion window.
Kermit Matthews is a freelance writer based in Philadelphia, Pennsylvania with more than a decade of experience writing technology guides. He has a Bachelor’s and Master’s degree in Computer Science and has spent much of his professional career in IT management.
He specializes in writing content about iPhones, Android devices, Microsoft Office, and many other popular applications and devices.