Billing cycle = 1day

Spoke to a supervisor at 1800TMOBILE.  T-Mobile uses a billed current system.  The bill payment is due durante your current cycle each month for 'post paid'.  For example, if my billing period starts on the 4th of each month, my payment for the current cycle is due 10 days before that period expires.  The date on the  first bill only shows the original days before the cycle.  She stated that the first bill is generally incorrect.  Starting with my next bill (and after the system will have caught up), it will reflect the correct cycle that I am in such that the bill due in April on the 25th (my second cycle) will reflect the billing period as 04April19 - 04May19.

I will watch the next bill.  If that is how it appears, then it would seem the first bill confuses their system and that should be fixed.

As a side note, the customer care was very good in this particular instance.