Yes. If you have unlimited minutes on your plan, you won't incur any airtime charges, aside from the cost of your plan (plus taxes, surcharges, and other fees). However, if you make a phone call to an international number, you will get charged per-minute voice rates, unless you have an international calling plan that includes calls to that country at no additional charge. Also, if you call any premium numbers, you will incur separate charges for these calls. A common example occurs if you call 411 and you did not sign up for a 411 Calling Fee Waiver for customers with cognitive, visual, or physical disabilities. Even with the 411 fee waiver, you still have to prove that you have a cognitive, visual, or physical disability (e.g.: autism, legal blindness, or paraplegia), and the fees for other premium calls still apply.