Update wallets.md (#779)

Add SubWallet to the list of wallets for Polkadot Hub

Author: AndyT-51

develop/smart-contracts/wallets.md

@@ -13,6 +13,42 @@ Connecting a compatible wallet is the first essential step for interacting with
 
 ## Connect Your Wallet
 
+### SubWallet
+[SubWallet](https://www.subwallet.app/){target=\_blank} is the most used and most comprehensive non-custodial wallet solution for Polkadot, Substrate & Ethereum ecosystems. It offers seamless integration with Polkadot-based networks while maintaining Ethereum compatibility, making the wallet an ideal choice for users & developers to interact with Polkadot Hub.
+
+To connect to Polkadot Hub using SubWallet, follow these steps:
+
+1. Install the [SubWallet browser extension](https://chromewebstore.google.com/detail/subwallet-polkadot-wallet/onhogfjeacnfoofkfgppdlbmlmnplgbn?hl=en){target=\_blank} and set up your wallet by following the on-screen instructions, or refer to our step-by-step [guide](https://docs.subwallet.app/main/extension-user-guide/getting-started/install-subwallet){target=\_blank} for assistance.
+
+2. After setting up your wallet, click the List icon at the top left corner of the extension window to open **Settings**
+
+   ![](https://github.com/user-attachments/assets/e8932cf1-0e5e-4f8d-8399-f95d1ecd2846)
+
+3. Scroll down and select **Manage networks**
+
+   ![](https://github.com/user-attachments/assets/34230fc3-8825-4d18-b3dd-edca30610211)
+
+4. Click the **+** button at the top right corner to add the network
+
+   ![](https://github.com/user-attachments/assets/f2e23ad9-e25e-498f-99aa-5059f678347f)
+
+5. In the **Import network** screen, enter the provider URL of the network. Once done, SubWallet will **automatically detect** the network name, token name (symbol), and network type
+
+   ![](https://github.com/user-attachments/assets/f0d683e8-7e0c-4624-9418-953448d5122d)
+
+6. After that, enter the network’s block explorer, then click **Save** to successfully import the network
+
+   ![](https://github.com/user-attachments/assets/4421f4e7-ce3a-4f26-b03f-c32b8193ccf6)
+
+7. You are now ready to use SubWallet to interact with Polkadot Hub TestNet seamlessly
+
+   ![](https://github.com/user-attachments/assets/04bb4bcf-a45d-4805-a96a-fc498ef84e62)
+
+!!!info
+    SubWallet fully supports PAssetHub's Smart Contract module. You can easily view and manage your PAS tokens across both Substrate and EVM-compatible networks in one place.
+
+    ![](https://github.com/user-attachments/assets/c9cd44d2-9536-4a25-a97b-938fdf74183a)
+
 ### MetaMask
 
 [MetaMask](https://metamask.io/){target=\_blank} is a popular wallet for interacting with Ethereum-compatible chains. It allows users to connect to test networks that support Ethereum-based smart contracts. However, it's important to emphasize that MetaMask primarily facilitates interactions with smart contracts, giving users access to various chain functionalities.