The fastest way depends on which app you use

Most messaging apps do not have a single "delete all" button. Instead, you delete messages by conversation — clearing one chat thread at a time — or you clear your entire message history through the app's settings. The method that works fastest depends on whether you want to keep some conversations and delete only others, or whether you want to wipe everything.

If you want to delete messages from one person or group, you usually long-press the conversation in your message list and tap delete. If you want to erase your entire message history across all conversations, you go into settings and look for storage or privacy options. Some apps let you set messages to delete automatically after a certain number of days, which prevents buildup in the first place.

Key Takeaways

  • Most apps require you to delete conversations one at a time from the message list, not all at once from a single menu.
  • Settings menus often have a "clear all messages" or "clear cache" option that erases your entire message history in one step.
  • Some apps let you set an expiration date so messages disappear automatically without you having to delete them manually.
  • Deleting a conversation usually removes it from your phone but may not remove it from the recipient's phone or from the app's servers.

Deleting all conversations at once in iPhone Messages

On iPhone, the built-in Messages app does not have a "delete all" button in settings. Instead, you delete conversations from the conversation list. Tap "Edit" in the upper left corner of your message threads, then tap the red minus sign next to each conversation you want to remove, or tap "Select All" if your iPhone supports it (this appears on newer iOS versions).

If you want to erase your entire message history including attachments and media, go to Settings > General > iPhone Storage > Messages and tap "Delete App" or "Offload App." This removes the app's data but keeps the app itself installed. You can then reinstall it fresh. This is the closest thing to a true "delete all" on iPhone.

Deleting all conversations at once in Android Messages

Android's default Messages app (or Google Messages if you use that) lets you select multiple conversations at once. Long-press the first conversation you want to delete, then tap other conversations to select them. Once you have selected all the ones you want gone, tap the delete or trash icon at the top of the screen.

If you want to clear everything, go to Settings > Apps > Messages > Storage > Clear Cache or Clear Data. Clearing data will erase all messages, but clearing cache only removes temporary files. Be aware that clearing data will sign you out of the app, and you may need to re-enter your phone number or account information when you open it again.

Deleting all messages in WhatsApp

WhatsApp does not have a built-in "delete all conversations" button. You must delete chats one at a time. Long-press a conversation in your chat list, then tap the trash or delete icon. If you have many conversations, this takes time.

To clear all message data from your phone, go to Settings > Storage and Data > Manage Storage, then tap "Clear All" next to the storage usage. This removes all messages, photos, and videos from WhatsApp but keeps the app installed. On iPhone, go to Settings > Storage > WhatsApp and tap "Delete App Data."

Deleting all messages in Facebook Messenger

Facebook Messenger requires you to delete conversations individually. Long-press a conversation, then tap "Delete." There is no batch delete option in the app itself.

If you want to erase all Messenger data from your phone, go to Settings > Apps > Messenger > Storage > Clear Cache or Clear Data. This removes all messages and attachments stored on your device. If you want to delete messages from Facebook's servers as well, you need to go to facebook.com on a computer, visit your message archive, and delete conversations there — the app alone cannot do this.

Using auto-delete to prevent message buildup

Rather than manually deleting messages later, you can set many apps to delete messages automatically. WhatsApp lets you set a timer so messages disappear after 24 hours, 7 days, or 90 days. Go to Settings > Privacy > Disappearing Messages and choose your default. You can also set a timer for individual conversations.

Telegram has a similar feature called "Auto-Delete Messages." Go to Settings > Privacy and Security > Auto-Delete Messages and set how long messages stay before they vanish. Signal lets you set expiration times per conversation by tapping the conversation name and choosing "Disappearing Messages." Using these features means you do not have to remember to delete old messages manually.

What happens when you delete a message

Deleting a message from your phone removes it from your device, but it does not always remove it from the recipient's phone. The person you messaged will still see the message unless the app supports message recall — and even then, recall does not always work if they have already read it.

Deleting a conversation from your app also does not remove it from the app's company servers. Facebook, WhatsApp, and other services keep copies of your messages for their own records, backup, and legal reasons. If you want to request that a company delete your data entirely, you usually need to go to their privacy settings or contact their support team directly. Some regions, like the European Union, have laws that let you request deletion, but the process varies by company.

Frequently Asked Questions

Can I delete all messages without deleting the app?

Yes. Go to your phone's Settings, find the messaging app, and look for "Clear Data" or "Clear Cache." This erases all messages stored on your phone while keeping the app installed. You will need to log back in or re-enter your phone number the next time you open it.

If I delete a conversation, can the other person still see it?

Yes. Deleting a conversation from your phone only removes it from your device. The other person will still see the entire conversation on their phone unless they delete it themselves. The messages remain on the company's servers as well.

Do disappearing messages work if the other person screenshots them?

No. Disappearing messages delete from the app after the timer runs out, but if someone takes a screenshot before they disappear, the screenshot stays on their phone. Some apps like Signal notify you when someone screenshots, but the image itself is not deleted.

Will clearing my message cache delete photos and videos too?

Clearing cache removes temporary files but usually keeps downloaded media. Clearing data removes everything, including photos and videos. Check your app's settings to see which option you are using, because the results are different.

Can I recover messages after I delete them?

Once you delete a message from your phone, you cannot recover it through the app. If you have a phone backup (iCloud on iPhone, Google Drive on Android), you might be able to restore an older backup that contains the messages, but this will also restore everything else from that backup date.