If in a given month more energy is exported than consumed from the grid credit can be used to offset future bills within the same 12 month billing cycle. (solar-estimate.org)
As with the postpaid One plan, T - Mobile says you may also notice «reduced speeds» in areas of congestion if you use more than 30 GB of data in a given month. (businessinsider.com)
The option to set up advance payments may be particularly useful if you want to make multiple payments in a given month, or if you prefer to check in on your loans less frequently. (myfedloan.org)