No, WonderConnect does not provide an unlimited data eSIM plan for Sri Lanka. All plans listed for Sri Lanka have a hard data cap, the largest of which is 50 GB valid for 30 days.
Customers who need large amounts of data can choose from WonderConnect’s fixed data plans. For example, the 50 GB plan is priced at $57.22 for 30 days, and a 20 GB plan is available for $31.99, both with tethering allowed. Fixed plans may be more cost‑effective unless a traveler expects very heavy data usage.