Early U.K. sales of the BlackBerry Z10 (BBRY -1.7%) are "solid," but have much to do with limited supply, suggests Canaccord's Mike Walkley: checks indicate most stores carrying the phone had less than 15 units in stock, thus making sellouts easy to come by. RBC's Mark Sue reports of strong demand in BlackBerry's home base of Canada, though store supplies are again said to be limited (5-10 units for walk-ins, 20-30 for pre-orders). (previous: I, II, III)