The TON blockchain supports various token standards, with Jettons being the equivalent of Ethereum's ERC-20 tokens. Tonkeeper for Android is engineered to handle these standards seamlessly. The wallet's code includes the logic to interact with the smart contracts that govern these tokens. When you receive a Jetton, the wallet detects the transaction, queries the Jetton's master contract to retrieve its metadata (name, symbol, decimals), and then displays it correctly in your portfolio. The swapping functionality within tonkeeper understands how to interact with decentralized exchange contracts to trade one standard for another. This support for multiple token standards is crucial for the wallet's functionality, enabling it to represent a diverse portfolio of assets accurately and allow for complex interactions between them, all through a unified and simple interface for the Android user.