Nokia's latest Lumia, the 900, has been rightfully lauded for its low price and lovely polycarbonate shell, but apparently, all is not well with the new handset. According to forum posts on Nokia Support Discussions and elsewhere, some 900s aren't able to connect to any of AT&T's data networks. The affected phones get data reception initially, but once the connection is severed by turning the phone off or placing it in airplane mode, it fails to reconnect. Some have successfully solved the probl