WorldSIM
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WorldSIM has two decades of experience in roaming and now offers their service as an eSIM with hotspot on all plans. They prioritize speed and reliability in high-traffic destinations, with partnerships that route you to faster carriers even when multiple networks are available in a country.
Go with WorldSIM if you need consistently strong speeds and can't afford slow data, even for short bursts. Their long-term presence in the market means the infrastructure is mature and the hotspot performance is reliable in cities and populated areas.