Hi @TEJAS_54557 welcome to 3Community. Yes, a Three sim can be used while roaming in South Africa and many African regions. To find out the roaming rates click here and enter the details requested on screen. Before you travel internationally, I'd also suggest looking at our roaming blogs All About: Roaming with Three & Roaming FAQs. Both will give you handy tips and tricks on using your phone while roaming.
