Planning your first trip to Bangkok, Thailand? Being a local travel expert who has spent years exploring this amazing city - from the golden spires of the Grand Palace to the lively street food lanes of Yaowarat - the most common question I hear from visitors is: "How do I get a SIM card or eSIM in Bangkok?" If you need to post your temple selfies on Instagram, use Google Maps for directions, book a Grab ride, translate a Thai menu, or video-call home from Wat Pho - a dependable Bangkok SIM card or eSIM is an absolute must. Here I'll explain everything: the best service providers, the data amount you realistically need, where to get one at Suvarnabhumi Airport, genuine costs, and how to steer clear of tourist SIM scams.