Swapping BUSD from BEP2 (Binance Chain) to BEP20 (Smart Chain) using Trust Wallet
In order to swap BUSD from BEP2 to BEP20, you need to have some BNB as BEP2 in your Trust Wallet in order to cover the network fee. That is why in Swapping BNB from Binance Chain (BEP2) to Smart Chain (BEP20) using Trust Wallet we recommend that you do not swap all of your BNB to BEP20, but keep some in BEP2.
In Trust Wallet, click on your "Binance USD" balance. The screen should say "BEP2" in the top left corner.
Then select "More" and from the popup menu select "Swap to Smart Chain".
Enter the amount (you may want to swap all your BUSD to BEP20 (Smart Chain), because BEP2 (Binance Chain) is only good for trading, whereas BEP20 also supports full Ethereum functionality and has many DApps). Click "Confirm" on the next screen and wait several minutes.
Trust Wallet will show a message saying "Processing. It might take a few minutes". This operation may take up to 30 minutes when network is busy. After the transaction is confirmed on both networks, you will see BUSD (BEP20) in your Trust Wallet.