If you're an AT&T customer eager to get your hands on the over-sized Nexus 6, get ready to wait a bit. AT&T stores are apparently returning the first crop of Nexus 6 units to Motorola over a software bug, Droid Life reports. And it'll likely be a while until their stock is replenished. The bug reportedly kills network connectivity on affected phones after displaying a black screen. We haven't seen too many complaints about the issue yet, but they've only started shipping out to preorder customers a few days ago. In any case, be prepared to hop it back to an AT&T store if the bug hits you. While the recall doesn't inspire much confidence, it could be worse. Just imagine if Motorola had to issue a widespread recall after thousands of people had their phones for weeks. For now, would-be Nexus 6 owners an AT&T can keep a giant candy bar or block of cheese nearby to train their hands for the phone's massive proportions.