What happens to your AI companion's memories when you get a new phone?

Short answer: It depends on where the app keeps your memories. If they are stored only on the old device, they can be lost. With Lumina AI Companion, memories are stored with your account, not on the phone, so when you sign in to the same account on a new phone, or on the web, your history and the story you have built together are there.

The primary source for the product details in this article is the Lumina page and the Lumina: AI Companion listing on Google Play.

Where do AI companion apps keep your memories?

There are two common designs:

• On the device. Memories live in the app's storage on your phone. A new phone, a factory reset, or uninstalling the app can erase them unless the app offers a backup.
• With your account. Memories are stored on the company's servers and linked to your account. Any device where you sign in to that account can reach them.

Which one an app uses is not always obvious, so it is worth checking the app's help pages or privacy policy before you reset an old phone. For a deeper look at how companion memory works, read our pillar guide, How AI memory works in companion apps.

How does Lumina handle a new phone?

Lumina AI Companion keeps memories with your account. Memory is private to each user, and it is linked to the account you sign in with, not to a particular phone. That means:

• Your memories and conversation history come with you when you sign in to the same account on a new phone.
• The same account works on the web, so you can check your history in a browser before or after switching.
• Device settings stay on the device. Display language and light or dark theme are saved on each phone, so choose them again on the new one.
• A different account starts fresh. If you create a new account by mistake, Lumina will not know you yet. Sign out and sign in with your original account.

For how Lumina carries context from one chat to the next, see How does Lumina remember you across chats?

How do you switch phones without losing anything?

1. Note the account you use. Before you reset the old phone, check which email or sign-in method you use for Lumina.
2. Install Lumina on the new phone from Google Play, or open it on the web.
3. Sign in with the same account. Not a new one.
4. Check that your history is there. Open a recent conversation or the Living Neural Map and look for things Lumina has learned about you.
5. Set your preferences again. Choose your language and theme, since those are saved per device.

Only after step 4 should you reset or give away the old phone.

What do we know, and what is still open?

What is true for Lumina: memories are stored with your account and are private to each user, and the app on Android opens the same account you use on the web.

What varies by app: other companion apps may store memories differently. If you use more than one, check each one's documentation before switching phones. The iPhone version of Lumina is coming soon; until then, iPhone users can use Lumina on the web.

About Physis Systems

Physis Systems (Physis Defense Systems, Inc.) builds Lumina AI Companion, a personal AI companion you can meet on the Lumina page, and Inventi Matrix, an invention engineering platform available in the United States and Canada at inventimatrix.com.