This works for both iPhone and Android devices.
Snapchat can not recover deleted Memories.
Open Snapchat app and tap yourprofile image.

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Scroll to the very bottom and tapMy Data.
EnsureMemories And Other Mediais checked, then tapNext.
Edit thedate rangeif you want to export Memories within a specific time frame.

Confirm your email in the text box.
This is where your backed-up Memories will be exported.
TapSubmitwhen you’re ready.

However, this process usually doesn’t take long and you’ll often get back all your missing Memories.
The next best way to avoid future problems is to set up backups.
Go toSettings>Memoriesin the app, and ensureSmart Backupis turned on.

FAQ
No.
Likewise, only you might see your Snapchat Memories.
There’s no way to see what other users have saved to their Memories.
grab the link from the email from Snapchat Support.
Then, go toMy Data>See exportsand download the ZIP file.
To access your Snapchat Memories, go to theCameratab and tap the smalldouble image icondisplayed by theCamerabutton.
Your Snapchat Memories remain on Snapchat’s servers until you delete them.
They are never automatically deleted.