Virgin Mobile answered your question in the FAQs:
Understand 411 and how much it costs on your Virgin Mobile plan
You can't make a call if you don't know the number, so let us help. Virgin Mobile's 411 service goes above and beyond directory assistance. It includes free call completion, as well as movie listings, restaurant reservations, sports scores, horoscopes, and weather forecasts. You will also receive the 411 listing via text message free of charge! Virgin Mobile's 411 service calls $1.75 per call plus standard airtime charges.
answered 2 years, 11 months ago