☧Can you use a phone card such as Mozart with your land phone?Or,are these only for cell phones.?

Prepaid calling cards are usable from both land and cell phones. Dial a toll-free access code to validate the account, then make calls. The only consideration that a cell phone has over a landline is airtime. Just because the access call is toll-free doesn't mean you don't pay in airtime, so be careful about when you call and whether you're burning airtime.