How to Connect Binance Web3 Wallet to DApps? On-Chain App Usage Guide

There are three core ways to connect the Binance Web3 Wallet to DApps: the built-in DApp browser in the APP (simplest, one-click open), WalletConnect v2 QR code scanning (cross-device universal), and browser extension injection (most convenient for desktop web). Users only need to update to the latest version of the official Binance APP (v2.92 or above) on the Binance official website, and choose the DApp Store or scan entrance under the "Web3" tab at the bottom. The entire connection process takes an average of 12 seconds. Currently, the Binance Web3 Wallet supports 41 mainnet chains (including BNB Chain, Ethereum, Arbitrum, Base, Solana, opBNB, Polygon, etc.), connecting to over 5,800 DApps across DeFi, NFT, GameFi, and SocialFi tracks. iPhone users who have not yet installed the APP can refer to the iOS install guide to complete the installation before connecting. Compared to MetaMask which requires manually adding RPCs, the Binance Web3 Wallet's automatic multi-chain switching significantly lowers the barrier to entry for beginners.

Three Ways to Connect Binance Web3 Wallet

Method 1: Built-in DApp Browser in APP (Recommended for Beginners)

1. Open the Binance APP, click the "Web3" tab at the bottom.
2. Enter the "DApp Store", where you can see selected DApps sorted by TVL and popularity.
3. Click the target DApp to automatically connect, with no signature authorization pop-ups needed.

Advantage of the built-in browser: Officially reviewed DApp list by Binance (over 1,200 projects included as of April 2026), reducing the risk of phishing sites by 95%.

Method 2: WalletConnect QR Code Scanning

Suitable for scenarios where you operate DApps on a computer browser and sign on the mobile APP:

1. Click "Connect Wallet" on the homepage of the PC DApp.
2. Select "WalletConnect", and a QR code will pop up.
3. Open Binance APP → Web3 → Scan icon in the upper right corner.
4. After scanning, click "Connect" to complete authorization.

WalletConnect v2 supports multi-chain sessions. One connection can simultaneously manage assets on BNB Chain, Ethereum, Arbitrum, and other chains.

Method 3: Browser Extension (Chrome/Edge)

1. Search for "Binance Web3 Wallet" in the Chrome Store to download the extension.
2. Import your seed phrase or scan to sync with your APP wallet.
3. Select "Binance Web3 Wallet" in the DApp for a direct connection.

Supported Major Blockchains and Representative DApps

Security Signature Guidelines for Connecting to DApps

Identifying Signature Types

• Connect: Only reads public addresses, zero risk.
• Sign Message: Costs no Gas, but may authorize login.
• Approve: Allows smart contracts to operate tokens, high risk.
• Permit2: Offline authorization, can be unlimited; be sure to check the spender address.
• setApprovalForAll: NFT batch authorization, the source of 90% of token theft cases.

Four Security Check Principles

1. Check the Domain: Ensure the official DApp domain matches the Binance DApp Store.
2. Check the Contract: Verify if the contract is open-source on EtherScan/BscScan.
3. Check the Allowance: Reject unlimited approvals; use precise amounts instead.
4. Check the Gas: Unusually high Gas (> 0.01 ETH) often indicates a malicious contract.

Common DApp Operation Scenarios

DEX Trading (Example: PancakeSwap)

1. After connecting the wallet, select "Swap".
2. Select the token pair BNB→CAKE, enter an amount of 0.5 BNB (≈350 USDT).
3. Confirm slippage (default 0.5%, adjust to 1-2% for large amounts).
4. Click "Swap" → Sign twice: Approve (first time) + Confirm transaction.
5. Gas fee is about 0.0008 BNB, gets on-chain within 10 seconds.

NFT Minting

1. Enter the official minting page of the NFT project.
2. Verify if the contract matches the officially announced address.
3. Click "Mint", confirm the Gas and Mint price.
4. Ethereum mainnet Mint Gas is about $30-$80, BNB Chain is about $0.5.

Lending (Example: Venus)

1. After connecting, select Supply BNB as collateral.
2. Borrow USDT, maximum LTV 80%, liquidation threshold 85%.
3. Real-time APY display, borrowing rates float between 5-15%.

Multi-Device Synchronization Notes

The Binance Web3 Wallet supports cross-device import via seed phrase, but when connecting the same wallet address to multiple DApp sessions simultaneously:

• WalletConnect v2 retains a maximum of 10 active sessions.
• When the limit is exceeded, the oldest session is automatically kicked out.
• The extension and the APP can run independently without affecting each other.

Disconnecting and Session Management

Regularly cleaning up unused connections can reduce the risk of exploitation by malicious contracts:

1. Open Binance APP → Web3 → Settings → Connected Sites.
2. View the list of historical connections (displays the last used time).
3. Click "Disconnect" or "Disconnect All".
4. It is also recommended to visit revoke.cash to revoke token Approvals.

Troubleshooting

No response after connecting? Check if the APP version is ≥2.92, and switch to the corresponding chain (e.g., the DApp requires Arbitrum but the wallet is on BSC).

WalletConnect timeout? The QR code is valid for 60 seconds; refresh and rescan. A VPN might affect the relay node connection.

Transaction not on-chain after signing? Check if the on-chain Gas Price is too low; you can use "Speed up transaction" in the APP to raise the gas.

DApp shows chain not supported? Click "Network Switch" in the upper right corner of the APP, select the corresponding chain, and reconnect.

By mastering these three connection methods and signature guidelines, users can safely and efficiently explore the 5,800+ DApps in the Binance ecosystem. It is recommended for beginners to start with the selected list in the DApp Store and gradually become familiar with on-chain interaction processes.