To use your MRT (Mass Rapid Transit) card on your iPhone in 2026, you must add a compatible transit card to the Apple Wallet app. For major systems like those in Singapore (SimplyGo) or London (Oyster/Contactless), you can simply add your existing physical card or a new digital one by opening the Wallet app, tapping the "+" button, and selecting "Transit Card." Once added, you should enable Express Mode for that specific card. This allows you to tap your iPhone at the turnstile without having to wake the device, unlock it with Face ID, or even use a passcode—it works instantly upon contact with the reader. If your local MRT uses a proprietary physical card that doesn't support direct Apple Wallet integration yet, you can often link your Visa or Mastercard stored in Apple Pay to the transit system's app to pay for rides directly. This "tap-and-go" technology has become the standard in 2026, eliminating the need for physical tickets or top-up machines and allowing commuters to manage their balances and view their travel history directly within their iOS device.