eSIMPhoney does not offer an unlimited data eSIM plan for South Asia. All of its South Asia bundles have capped data allowances.
However, the provider sells fixed‑data plans that can be a practical alternative. For example, the Asia 50GB plan provides 50 GB of data valid for 180 days and covers Bangladesh, India, Sri Lanka, Pakistan and 18 other countries; the Asia Plus 50GB plan offers the same data amount for 180 days covering Afghanistan, Bangladesh, India, Sri Lanka, Maldives, Nepal, Pakistan and 28 additional countries. Choosing a fixed data bundle may be more cost effective unless a traveler is a very heavy data user.