What does the “Keep Messages: 30 Days” setting actually delete?

Does an iPhone keep text messages forever?

Yes, unless someone changed one setting. Keep Messages starts at Forever, and on Forever iOS deletes nothing on a timer. A full phone does not quietly delete texts either; it warns you and suggests fixes, and you have to tap one.

An iPhone deletes old messages automatically only when Keep Messages is set to 30 Days or 1 Year. Then it runs every day.

If your messages are already missing, read this first

What the setting has already deleted is gone. This page cannot bring it back, and neither can the software we sell. ScribeHold reads what an iPhone still holds; it cannot undelete anything, and buying it to get those messages back would waste your money.

Before you give up, open Messages on the phone and look for Recently Deleted. Messages you delete yourself wait there for about 30 days, and you can restore them on the phone for free. We cannot promise the setting's own deletions land there too. Look anyway; it takes a minute.

If those messages are what a legal matter turns on, you need a forensic examiner, not us. That is a real profession with real tools, and it is worth the call.

The rest of this page is about the messages you still have.

Where the setting is

On iOS 18 and later: Settings › Apps › Messages › Keep Messages. Many older guides give Settings › Messages, which is where it lived before iOS 18. The choices are 30 Days, 1 Year and Forever.

If it is already on 30 Days, set it to Forever now; the change stops further loss at once. If you are about to pick 30 Days, iOS asks you to confirm deleting the older messages first. That prompt is your last chance to keep them, so take a copy before you tap it. It is set per phone, so check the phones of the people whose messages you would hate to lose.

Why it is on when you don't remember turning it on

When storage runs low, iOS suggests deleting old conversations automatically, and under a storage-full warning most of us tap whatever makes the warning go away. A new phone restored from an old backup can carry the old choice across.

iOS does not announce each day's deletions and keeps no list of what it took. The thread simply gets shorter. People usually notice months later, while searching for one old text and finding the conversation starts in March.

What goes, and what the 30 days is counted from

• Text in every thread. iMessage and SMS, group chats and one-to-one. The setting has no idea which conversations matter to you.
• Photos, videos and voice messages. These are most of the space it frees, and they are usually the hardest things to replace.
• The message date, not your last visit. The 30 days counts from when each message was sent, so a conversation you reply to daily still loses its older end.
• Both sides. What you sent goes with what you received.

Messages in iCloud does not protect you here. It keeps your devices in sync, so a thread that shortens on the phone shortens everywhere.

Take a copy before you switch

If you want the space back and still want the old messages, copy them off the phone first, then switch. Done the other way round, there is nothing left to copy.

Even on Forever, a copy is worth having. Forever only means iOS stops deleting on a timer; a lost phone, a cracked screen or a restore that goes wrong still ends the same way, with years of history on one device you carry every day.

A computer backup is the free answer, and a reasonable one. The next backup to that computer replaces it, so copy the backup folder somewhere else before you switch. If you only want the messages preserved, stop here. What a backup will not do is let you read or search them; it stays a sealed bundle until you restore a whole phone from it.

ScribeHold is the readable version of the same idea, on Windows. It copies the history over a USB cable onto your PC, with attachments at full size, once you type the passcode on the phone. Messages the phone deletes after that copy stay in the copy, marked as deleted: hidden until you choose to show them, and outside search. Nothing is written back to the phone.

When ScribeHold is the wrong purchase

• Your messages are already deleted. Worth saying twice, because it is the most common reason somebody asks us for a refund. It cannot undelete anything.
• You want them preserved, not searchable. Forever plus a computer backup costs nothing and does that job.
• You work on a Mac. ScribeHold is Windows-only and will stay that way. With Messages in iCloud your history is already on the Mac. Use that.
• You have a backup password set. ScribeHold does not read encrypted backups. With Encrypt Local Backup on, the run fails; you would have to turn it off, and an unencrypted backup leaves out saved passwords and Health data.

If none of those apply, download ScribeHold for Windows. The free tier searches every message the phone still holds, so you can see what survived. Opening anything older than 90 days, or exporting past 30, needs ScribeHold Complete at $49 a year. The limitations page lists everything else it cannot do.