---
updatedAt: 2026-05-08T13:11:54.000Z
agentTools:
  projectIndex: https://docs.lmnl.app/v2/llms.txt
---

# Restore Liminal Vaults Mobile MPC Keys on a New Mobile Device 

This guide explains how to reinstall the Liminal Vaults mobile app on a new mobile device and restore your mobile MPC key. 

**Owners** and **Signers**  can switch to a new mobile device ([iOS](https://apps.apple.com/in/app/liminal-vaults/id1667220240) and [Android](https://play.google.com/store/apps/details?id=com.liminal.app\&hl=en\&pli=1)) to recover and access assets using mobile MPC keys and continue signing transactions.

# Prerequisite

* Ensure you have installed either the [Liminal Vaults iOS app](https://apps.apple.com/in/app/liminal-vaults/id1667220240) for an iPhone device or the [Liminal Vaults Android app](https://play.google.com/store/apps/details?id=com.liminal.app\&hl=en\&pli=1) for an Android device.
* The **Owner** must ensure they have the backup recovery kit and the passphrase used during the initial account registration. Refer to [Install and Sign up on Mobile App](https://docs.lmnl.app/v2/docs/install-and-sign-up-on-the-mobile-app#/) to learn more about backup recovery. Refer to [User roles and teams](https://docs.lmnl.app/v2/docs/additional-details) for more information on **Owner** and transaction **Signer** access roles.

# Recover Signing Keys as Owner

Follow the steps below to recover and restore your MPC keys as an **Owner**.

1. Sign in to the **Liminal Vaults** mobile app ([iOS](https://apps.apple.com/in/app/liminal-vaults/id1667220240) and [Android](https://play.google.com/store/apps/details?id=com.liminal.app\&hl=en\&pli=1)) using your credentials.

   <Image align="left" border={true} src="https://files.readme.io/259e13756487d11cbb1245b5b244c27a18c380af57034ee6369e3bfbe390c86a-image.png" className="border" />
2. Select the required **Organisation**.
3. Select **Restore keys** after signing in.

   <Image align="left" border={true} src="https://files.readme.io/af740f6480f7bee9904841b5fba28346c374afd52c4b7babccd589be56ccbeb5-image.png" className="border" />
4. Click **+ Select File** to upload the backup recovery kit.

   <Image align="left" border={false} src="https://files.readme.io/eb435ecb359f0b3633210201c665dbb05610b5f17167ba61594ee341f46cbe45-image.png" />
5. Next, enter the **passphrase** and select **Restore Now**.

   <br />

   <Callout icon="📘" theme="info">
     **Note**

     Ensure it is the same passphrase that was set during the initial account setup on your old device.
   </Callout>

   <Image align="left" border={false} src="https://files.readme.io/fb661829538b03fe25558261302306a65a624391e26e2caaac08ad76cb89c530-image.png" />

   <br />

   <br />
6. You have successfully restored your mobile signing keys for the respective organisation. Click **Continue** to check pending actions in the **Actions** tab.

<br />

# Recover Signing Keys as Non-Owner (Mobile Signer)

Mobile transaction **Signers** can successfully restore their MPC keys to sign transactions by requesting their respective Owners to re-enable shard sharing.

## Step 1: Activate the Signer account on the Liminal Vaults app

1. Sign in to the **Liminal Vaults** mobile app ([iOS](https://apps.apple.com/in/app/liminal-vaults/id1667220240) and [Android](https://play.google.com/store/apps/details?id=com.liminal.app\&hl=en\&pli=1)) using your credentials.

   <Image align="left" border={true} src="https://files.readme.io/259e13756487d11cbb1245b5b244c27a18c380af57034ee6369e3bfbe390c86a-image.png" className="border" />
2. Select the required **Organisation**.
3. You must set up a passphrase and biometric identification to continue onboarding and activate your **Liminal Vaults** mobile signer account.
   1. Click **Set up Passphrase**.

      <Image align="left" border={true} src="https://files.readme.io/ba35acf7198e4ffacca9a9f0d62413bd08f9d87dbd2aee2b451ea9d528a80361-image.png" className="border" />
   2. Select **Let’s Go** to set up your passphrase and biometric identification, respectively.

      <Image align="left" border={true} src="https://files.readme.io/5db87c79810b49959734ac73117dd1dc33b8a1fc94752f9d623390d964050493-image.png" className="border" />
   3. Enter the required passphrase and click **Set passphrase** to continue.

      <Image align="left" border={false} src="https://files.readme.io/1149916808f7c40b06aaad617e106cff164301de32d5027c91ff8076313e12fa-image.png" />
   4. Once you have successfully set up the passphrase for your organisation, click **Setup Touch ID Now** to proceed.  You have successfully recovered the signer account for your organisation on the **Liminal Vaults** app.

## Step 2: Owner re-enables Shard

**Signers** (non-owners) can access and perform actions on cards that do not require an MPC key. If a non-owner wants to perform actions on cards that require the MPC key, they need to request the **Owner** of their respective organisation to re-enable shard sharing for the signer’s account.

If a **Signer** has not restored your signing keys, you will encounter the following error message when approving a transaction that requires MPC keys.

As an **Owner**, please follow the steps below to re-enable mobile access to your requested signer account:

1. Sign in to your **Liminal Vaults** [web account ](https://vaults.lmnl.app/)using the required credentials.
2. Navigate to the **Settings** tab from the left navigation menu.
3. In the User Management section, under **Users**, click the  **View** to navigate to the users list.

   <Image align="left" border={true} src="https://files.readme.io/6e8dbcb85aeb7c5cc0ae73fad64b9794884c0e12df84e67ec0c145b9b31494a9-image.png" className="border" />
4. Click the hamburger icon to the right of the required user’s row and select **Re-enable Mobile**.

   <Image align="left" border={true} src="https://files.readme.io/9b1a408ff34dc93a3089858442133881d2cb107ecc21fc412a091a8c35ae47a1-image.png" className="border" />
5. Click **Confirm** on the pop-up to re-enable the mobile device against the **Signer’s** user account.

   You have successfully initiated a request, enabling mobile access to the **Signer’s** account. You will receive a notification on your mobile device once the request is successful.

   <Image align="left" border={true} src="https://files.readme.io/2e527cc7099ba5d4b874a7d549505d3dce2a37389e0576ebcf62655ca68bb5ad-image.png" className="border" />
6. Navigate to the **Actions** tab of your **Liminal Vaults** mobile app, and you will find a security card requesting approval for mobile signer access.
7. Click **Approve**.

   <Image align="left" border={true} src="https://files.readme.io/4a84c6ec737ad737e01cbac4f6082b654041d7d10c3b29c898c5bb4cbad24030-image.png" className="border" />
8. Verify the signer details, and click **Approve**. Proceed with the biometric verification for the app.

You have successfully approved the shard initiation request from the **Signer** and reshared the shard for the new device as an **Owner**.

## Step 3: Signer accepts Shard

As a **Signer**, you need to accept the shard shared by the **Owner** on your **Liminal Vaults** mobile app.
Follow the steps below:

1. Navigate to the **Actions** tab of your **Liminal Vaults** mobile app.
2. You will find a security card requesting approval for mobile signer access. Click **Approve** on the card to accept the shard.

   <Image align="left" border={false} src="https://files.readme.io/e25880952b3f32fa66688f2f09bace5fd582467b57c36d57418227a71e471300-image.png" />
3. Verify the details and click **Approve**.

   <Image align="left" border={false} src="https://files.readme.io/82130381ec400a4a7b542579f4a96e6256e6b7b26b1b63ed8088ffe1a7ff6e6e-image.png" />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

You have successfully restored your MPC signing keys for the mobile app as a signer and can proceed with signing transactions that need MPC keys. Click **Continue** to check pending actions in the **Actions** tab.