Noida GreaterNoida Residents on Instagram: "Unlike a Delhi metro card, where one has to maintain a minimum balance of Rs 50, there is no such condition on the Momentum 2.0 Delhi Sarthi. Once you sign up using a phone number, the app works like a digital wallet, which can be used to quickly purchase metro tickets, including multiple journey QR tickets #noidaresidents #delhimetro #delhi #noida"