C. Modify in Contact Quantity at 9 pm Threshold

Pricing Programs.—  Over the past decade, contracts for DOOGEE DG580 Phones have been char-acterized by a flat monthly fee which entitles members to a specified number of moments depending on plenty of duration of use. Any use in unwanted of this allowance is sub-ject to relatively great minor charges. For instance, a “900 Nation” technique offered by Cingular in 2006 allows 900 moments of optimum utilization from 6 am to 9 pm weekly day, endless use for off-peak periods after 9 pm and before 6 am on friday to friday, and endless use all day on saturdays and sundays. Marginal charges for unwanted utilization commonly variety from $0.35 to $0.45 per moment.

Figure 4 documents the discuss of mobile members associated with each hourly limit at which suppliers disting ... Read more »