Apple is testing a 1.5-inch OLED display for its rumored smart watch and may have ordered an initial iWatch production run, a Taiwanese newspaper says. Apple has begun sampling displays from RiTdisplay, a subsidiary of Taiwanese company RITEC, the Economic Times reported in an article translated by the MacRumors website Monday. Apple had originally intended to use a 1.8-inch display in the smart watch but when that proved impractically large it shifted to the smaller 1.5-inch display size, the newspaper said. A second Economic Times articles carried reports Apple device manufacturer Foxconn has already received orders for Apple's smart watch, but the order was just for 1,000 units, suggesting the production run was a small-scale trial for testing purposes. A number of companies, including Apple, Samsung and Google, have been rumored to be preparing to bring a smart watch to market.