After a day when some customers gave up trying to buy a new iPhone 4, both AT&T and Apple continued to have major problems handling online orders Tuesday night. As of 8:30 p.m. ET, AT&T's Web site was returning an error during the part of the ordering process when a current customer's account is checked to determine whether he or she is eligible for a new iPhone at the subsidized prices of $199 for a 16GB model or $299 for the 32GB device. "There was a problem with your request," the error message reads. "P1015: We're sorry, but we are experiencing a system error that prevents us from completing your request. For non iPhone related upgrades, please call Customer Care at 1-888-867-4384 and provide the error number at the beginning of this message." Order attempts at Apple's online store at 8:30 p.m. ET were also stymied, as they have been for much of the day.

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