Ever wonder how much data your smartphone will use when used all day as a 3G VoIP device ? Let’s assume that we all own an Apple IPhone – under the new data model that ATT provides, unlimited data usage comes for $29.99/month. Let’s also assume that there is no data usage over the 3G when at home – we all have WIFI at home. So the total hours used would be around 10-14. If we are on the line all that time ( assuming a worst case scenario or data intensive application like a voip video chat ), then the cost would be very bitter when bill time comes along.
|ATT Data Plan||14.99||250 MB||29.99||Unlimited|
|Average number of calls per day||20||calls||30||calls|
|Length of each call||5||minutes||15||minutes|
|Cost per minute||0.5||cents||0.5||cents|
|Cost of local/national/International VoIP calls ( over Skype )||50||dollars||225||dollars|
|Data Overage usage costs||100||dollars||0||dollars|
|Total Monthly cost||150||dollars||225||dollars|