If it is safe to, yes! Once your goal is fully set up, Digit will start to set aside aggressive yet safe amounts each day with the target of saving the full amount that you input, by the day of the month that you selected - Digit will not save your entire bill's amount at once to ensure that you're not put in any tight spots.
If Digit can't save your bill amount by the due date
In the event that Digit isn't able to find safe opportunities to save your entire due amount in time, it will still ensure that you are able to pay your bill by the deadline. Anything saved in your phone bill goal will automatically be sent to your biller, and Digit will send you a text reminding you that the rest of your bill is due.