ELIJAH NOUVELAGE/AFP/Getty Images The iPhone X’s bill of materials — the total cost of the smartphone’s components — is the highest ever for an Apple smartphone.When Apple unveiled the iPhone X, its $999 retail price attracted criticism. But the iPhone X comes with a high price tag for Apple, too. The iPhone X’s bill of materials — the total cost of the smartphone’s components — is the highest ever for an Apple AAPL, -0.06% smartphone at $370.25, according to a report from IHS Markit INFO, -0.41% released Wednesday. Comparatively, the bill of materials was $255.16 for an iPhone 8 and $237.94 for the iPhone 7. Apple declined to comment on the report. Two features of the new device drive its higher manufacturing cost, according to IHS Markit principal analyst Wayne Lam: The improved screen and the Face ID technology.via