AT&T offers a wide variety of smartphones that starts from $1/month with purchase of AT&T Next. The AT&T Next wireless plan must be valued for at least $50/month. Additionally, the phone you purchase can only be up to $499.99 on installment agreement. The phone will only cost $1/month after the credits have been applied to your account over a period of 30 months. You will be responsible for the balance if you cancel the plan. There is a $30 activation fee that applies. The discount will start within 2 billing cycles. You must have autopay to be eligible for the offer.