This is a really layered situation and I want to cover every angle because people come to this question for different reasons.
Understanding Why Recovery Is Hard
Instagram DMs are stored server-side, not primarily on your device. This is fundamentally different from SMS messages, which live in a local database on your phone. Because Instagram controls the storage, your ability to recover deleted messages depends almost entirely on what Instagram has retained on their end, and they do not expose that to users in most deletion scenarios.
The Cache Situation
Instagram does store some temporary data locally on your device. On Android this is in the app data directory. On iOS it is in the app’s sandboxed container. However this cache is designed for performance, not backup. It gets overwritten constantly as you use the app. If you deleted something hours ago and have been actively using Instagram since, that cache is almost certainly overwritten already.
What About Screenshots and Notifications
Worth checking: your phone’s notification log. On Android, some launchers (like Nova Launcher) keep a notification history that includes message previews. Go into the notification history feature if your launcher supports it. Also check your phone’s built-in screenshot folder, which on Android is usually at Pictures/Screenshots, in case you ever screenshotted the conversation.
The Data Request Route
As others have mentioned, the Instagram data download is your most realistic shot. One additional tip: if your request comes back and the messages are not in the archive, you can submit a formal data access request to Meta under applicable data protection laws (like GDPR if you are in Europe, or similar laws in other regions). Meta is legally required to respond to these requests and sometimes this surfaces data not included in the standard download. This is a slower route but it has worked for some people.
What Happens After a Long Time
If the messages were deleted weeks or months ago, the honest answer is that recovery becomes extremely unlikely through any method. Data does not persist in recoverable states indefinitely either on your device or on Instagram’s servers.
Professional Data Recovery
If the content was genuinely critical (legal or financial information for example), professional data forensics services exist that can attempt physical recovery from device storage. This is expensive and not something most people need, but it is an option worth knowing about.