The HSPA+ version of Samsung Electronics’ Galaxy S4 smartphone carries a $236 bill of materials (BOM), up significantly from last year’s model — the Galaxy S III — due to major upgrades in the display, sensors and application processor and supporting memory, according to a virtual teardown conducted by IHS iSuppli. The HSPA+ S4 with 16 gigabytes of NAND flash memory costs $244.00...