The ETravelSim Philippines eSIM is for the Philippines only, so data stops the moment you cross into Vietnam, Thailand, Malaysia, Indonesia, or Singapore. For multi-country Southeast Asia trips, ETravelSim sells an Asia 14 Countries eSIM covering wider regional travel on a single plan. If anything goes wrong with activation, contact support 24/7 via WhatsApp at +65 9236 1258, the on-site chat, or support@etravelsim.com with your order number.