Does it cost money to use internet if you have an unlimited plan?

i want to get an LG env 3 because you can browse the internet and stuff with a full keyboard...but...does browsing(like facebook and youtube) cost money if u have an unlimited plan?
Does it cost money to use internet if you have an unlimited plan?
nope, if you have unlimited data you can use internet and Youtube, I messaged them and asked this too. The cheapest plan with unlimited Data is the Collect plan its 70.00 a month