This type of POS terminal operates via a mobile network, allowing businesses to accept card payments even in areas with limited Wi-Fi or Ethernet connectivity. It provides secure and fast transactions, ensuring continuous operation without interruptions. Many models support contactless payments, chip & PIN authentication, and multiple network providers to enhance flexibility.

Example: A hotel reception desk uses a desktop terminal with a SIM card to process guest payments even when the main internet connection fails. This ensures seamless check-ins and check-outs, avoiding delays and improving customer satisfaction.