First bill cycle spiel

So I carefully check your bill here, and as you can see on your 1st bill you have your complete bill including the family plan for your account, And if you will check on the 2nd bill that is a prorated rated charge that covered for bill period Sep 17 - Oct 17 And this is usually happening on the first month of the account But moving forward rest assured that it will be back to normal, the $190.84 Do you want me to breakdown the bill why you have $190.84?

__

First Bill link: https://www.t-mobile.com/support/new-to-tmobile/billing

__

When a billing cycle date is changed, the new cycle typically starts on the next billing date after the change is processed.

Since your previous billing cycle ended on the 22nd and you changed it to the 1st of the month, the new billing cycle will start on October 1st. This means your current cycle will be prorated from September 22nd to September 30th.

Your next bill will include prorated charges for the period from September 22nd to September 30th, and then the full charges for the new cycle starting October 1st