A wireless credit card terminal is a portable payment device that allows businesses to accept card payments without staying connected to a wired POS system. It runs through Wi-Fi, Bluetooth, or 4G/5G networks and supports EMV chip cards, contactless tap payments, and mobile wallets like Apple Pay or Google Pay. These terminals are popular among small businesses, cafes, delivery services, mobile vendors, salons, and event-based sellers who need flexibility and fast transactions on the go.