The customer left his "private" meter in place for a portion of each billingperiod.
用户在每一个收费期的部分时间里换上他的“私人”电表。
2
If you tap View Your Account under Settings -> Cellular Data, you can see how much data you’ve used and how much you have left for your billingperiod.
设置->查看你的账户->通讯流量，就可以查看你使用了多少流量，以及还剩下多少流量。
3
Preset 5 - Power Account - Calculates the total units used based on meter readings, the number days in the billingperiod and the total amount owing including maintenance charges.