Even as Apple suffers the continuing pains of its iPhone 4 “Antennagate” brouhaha, it appears at least one competing device is now facing problems of its own: Motorola and Verizon on Tuesday acknowledged faulty screens on some Droid X handsets and offered affected consumers a free replacement device. “We are aware of a very small number of Droid X units that have experienced a flickering or banding display,” said Motorola spokesperson Juli Burda. “The exposure of devices is limited to less than one-tenth of a percent.”