$540 via promo credit when you add a new smartphone line with your own 4G/5G smartphone on postpaid Unlimited Plus plan between 5/18/23 - 5/31/23 & port-in req'd. Promo credit applied over 36 months; promo credits end if eligibility requirements are no longer met.
I want to change the day my phone bill is due, from the 11th to the 15th. Can I do this, and if so, how?
That depends on the billing dates available for your region. It can be changed by calling customer service