Planning your first trip to Bangkok, Thailand? As a local travel guide with years of experience navigating this incredible city — from the shimmering spires of the Grand Palace to the bustling street food lanes of Yaowarat — one question I get from tourists more than any other is: "Where can I get a SIM card or eSIM in Bangkok?"
Whether your goal is to share temple selfies on Instagram, use Google Maps for directions, arrange a Grab ride, translate a Thai menu, or video-call home from Wat Pho — a reliable Bangkok SIM card or eSIM is absolutely essential. In this guide, I'll walk you through everything: the best carriers, how much data you actually need, where to buy at Suvarnabhumi Airport, true expenses, and how to stay safe from tourist SIM scams.