> ## Documentation Index
> Fetch the complete documentation index at: https://docs.portalhq.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Upgrading to EIP-7702

> Learn how to check wallet account type and upgrade EOA wallets to EIP-7702 using Portal's iOS SDK.

Portal's iOS SDK provides EVM Account Type management through the `portal.evmAccountType` API. This enables checking wallet account types and upgrading EOA wallets to EIP-7702 on supported EVM chains.

## Overview

The EVM Account Type functionality allows you to:

* **Check wallet status** to determine the current account type
* **Upgrade to EIP-7702** to enable ejecting the Portal wallet's EOA private key

## Prerequisites

Before using EVM Account Type operations, ensure you have:

* A properly initialized Portal client
* An active wallet on a supported network (see [Create a wallet](./create-a-wallet))
* Understanding of [EVM Account Type concepts](/resources/evmAccountType)
* You fund the [Upgrade Sponsor address with native tokens for the target chain in the Portal Dashboard](https://app.portalhq.io/upgrade-sponsorship)

## Checking Wallet Status

Use `getStatus` to check the current account type of your wallet. The response includes both the account status and metadata about the wallet addresses.

```swift theme={null}
Task {
    do {
        let chainId = "eip155:10143" // Monad Testnet

        let response = try await portal.evmAccountType.getStatus(chainId: chainId)

        print("Status: \(response.data.status)")
        print("EOA Address: \(response.metadata.eoaAddress)")

        if let smartContractAddress = response.metadata.smartContractAddress {
            print("Smart Contract Address: \(smartContractAddress)")
        }

        if response.data.status == "EIP_155_EOA" {
            print("Can upgrade to EIP-7702")
        } else if response.data.status == "EIP_7702_EOA" {
            print("Already upgraded")
        } else {
            print("Cannot upgrade")
        }
    } catch {
        print("Failed to get account status: \(error.localizedDescription)")
    }
}
```

**Response (`EvmAccountTypeResponse`):**

* `data.status`: One of `EIP_155_EOA`, `SMART_CONTRACT`, or `EIP_7702_EOA`
* `metadata.eoaAddress`: The EOA address associated with the wallet
* `metadata.smartContractAddress`: Your smart contract wallet address (optional, may be `nil` for EOA-only accounts)
* `metadata.chainId`: The chain identifier

***

## Upgrading to EIP-7702

Use `upgradeTo7702` to upgrade an EOA wallet to EIP-7702. This method automatically handles the entire upgrade process, including gas subsidization, and returns the transaction hash directly.

```swift theme={null}
Task {
    do {
        let chainId = "eip155:10143" // Monad Testnet

        // Upgrade to EIP-7702
        let txHash = try await portal.evmAccountType.upgradeTo7702(chainId: chainId)
        print("Upgrade done! TX: \(txHash)")

        // Verify final status
        let status = try await portal.evmAccountType.getStatus(chainId: chainId)
        print("Final Status: \(status.data.status)")

        if status.data.status == "EIP_7702_EOA" {
            print("Successfully upgraded to EIP-7702!")
        }
    } catch let error as EvmAccountTypeError {
        switch error {
        case .invalidAccountType(let status):
            print("Cannot upgrade - current status: \(status)")
        case .unsupportedChainNamespace(let chainId):
            print("Unsupported chain ID: \(chainId)")
        default:
            print("Upgrade error: \(error.localizedDescription)")
        }
    } catch {
        print("Upgrade failed: \(error.localizedDescription)")
    }
}
```

**What happens during the upgrade:**

1. **Chain validation**: Verifies the chain uses the `eip155` namespace
2. **Status check**: Confirms the wallet is currently an `EIP_155_EOA`
3. **Authorization building**: Creates the EIP-7702 authorization list
4. **Signature**: Signs the authorization hash with your wallet
5. **Transaction submission**: Submits the subsidized upgrade transaction (gas is paid by Portal)
6. **Transaction hash**: Returns the on-chain transaction hash

**Response:**

The method returns a `String` containing the transaction hash of the submitted upgrade transaction.

**Error handling:**

The method throws typed `EvmAccountTypeError` errors:

* `invalidAccountType(status)`: The wallet is not an `EIP_155_EOA` (e.g., already upgraded to `EIP_7702_EOA` or is a `SMART_CONTRACT`)
* `unsupportedChainNamespace(chainId)`: The chain does not use the `eip155` namespace
* `portalNotInitialized`: The Portal instance is not available
* `invalidSignatureResponse`: The signing operation returned an invalid result
* `invalidTransactionResponse`: The transaction hash was not returned from the API

***

<Warning>
  The upgrade process is irreversible per wallet. Once upgraded to EIP-7702, the wallet cannot be reverted to a standard EOA on that chain.
</Warning>

***

## Supported Networks

EVM Account Type upgrades are currently available on:

* **Monad Testnet** (`eip155:10143`)

For a complete list of supported chains, reach out to the Portal team.

***

## Next Steps

* Learn about [signing transactions](./sign-a-transaction)
* Explore [Portal API methods](./portal-api-methods)
* Review [EVM Account Type concepts](/resources/evmAccountType)
* Check out [wallet lifecycle management](./manage-wallet-lifecycle-states)