TravelSim is a prepaid international roaming SIM card that works in over 200 countries and 400 networks without a contract. It provides voice, data, and text services and allows free incoming calls from over 150 countries. TravelSim offers data packages that can be used across multiple countries and provides connectivity for social media, messaging, and internet access while traveling internationally. Over 5 million users enjoy TravelSim's services for staying connected when traveling abroad.