Let's say you have a typical basic cell plan with unlimited incoming minutes. Let's also assume they give you 100 free anytime minutes with this plan.
100 minutes / 30 days = ~3 minutes a day per month
Your free 100 minutes only adds up to roughly 3 minutes each day. Standard 'Additional Minute' fees are $0.35. Using the example above, If you used 4 minutes a day on phone calls, just one minute more each day, then they would charge you an additional $10.50 by the end of the month!
Using the plan above, if you spend four or more minutes on your cell phone each day, Call Devil will save you money. And the best part is, the more you talk, the more you save.