Heading to Bangkok for the first time? Having spent years exploring this amazing city as a local guide — from the shimmering spires of the Grand Palace to the bustling street food lanes of Yaowarat — the top question I hear from visitors is: "How do I get a SIM card or eSIM in Bangkok?" Whether you want to share your temple selfies on Instagram, navigate with Google Maps, arrange a Grab ride, read a Thai menu, or video chat home while at Wat Pho — having a dependable Bangkok SIM card or eSIM is key. In this guide, I'll walk you through everything: top mobile providers, what data plan suits your needs, where to purchase one at Suvarnabhumi Airport, true expenses, and how to avoid tourist SIM scams.