I wrote an article on how I use the Binance Smart Chain. https://scottdebevic.medium.com/how-to-use-binance-smart-chain-on-iphone-251fd1f30a9e.

My method uses Trust wallet and Metamask. There's a decent number of steps, but if you have BNB, the fees are low to get your funds over to Binance Smart Chain.

Not sure if you use Telegram, but if you do, feel free to DM me: https://t.me/scottdebevic. I'd be happy to answer any questions.