Yes.  Unplugging the phone once fully charged will help lengthen the life of your device battery.

Usually, no.  However, some buyers will only qualify for AT&T Next or AT&T Next Every Year with a 30% down payment.

AT&T Next and AT&T Next Every Year require that you sign an installment agreement to pay for the smartphone in monthly installment payments.  If you cancel your wireless service, the remaining unpaid balance on the smartphone is due.  Also, a wireless customer agreement for your wireless service or qualified business agreement (voice and data is required).

The smartphone is yours, and you’re responsible for the monthly installment payments.  You’re also responsible for any loss, theft, or damage to the smartphone – both during the installment agreement period and afterward.  We recommend you purchase the optional mobile insurance to protect your investment.

After you have been billed and made two monthly installment payments, as long as your account is in good standing, you are eligible to take advantage of our pay-to-upgrade option.

For AT&T Next, pay a lump sum amount that completes 80% of the full retail price in order to upgrade with eligible trade-in.  For AT&T Next Every Year, pay a lump sum amount that completes 50% of the full retail price in order to upgrade with eligible trade-in.

Please note that to trade in your smartphone, it must be fully functional and in good physical condition.

Yes, you have the option to pay off your installment agreement, but the full outstanding balance will be due immediately.

With AT&T Next, you can pay off your installment payments in full at any time. If you want to cancel your AT&T wireless service, the full outstanding balance on your installment agreement becomes due.