The same problem and I consider this a mistake from Binance, and their excuse is the fees. Well, we disagree that the fees should be deducted from the trades or from any currency available with the client.

📛 Hello everyone, I have a problem and I need your help with it:

I have USDT balance on the (ERC20) Trust wallet and I want to send it to a Binance address, but every time I try it asks me for a fee $ETH

I thought I would convert from USDT to $ETH to save on network fees, but another message pops up saying:
"You do not have enough Ethereum (ETH) balance to cover the network fees"

🙂 This means I can't send USDT, nor can I convert it to ETH, and everything is stuck because I don't have ETH at all.