I agree, on a direct replacement vs labor cost comp these types of repairs are uneconomical. However when one considers the total systemic cost including dispoal/landfill/recycling/PCB pollution I think repair becomes a more feasible solution. Unfortunately manufacturers are mostly not required to incur/consider these tangential costs and so replacement is the most economically expedient solution.
The Galaxy S7 comes in two major flavors - the US version that sports the Snapdragon 820 and the international version that uses Samsung's Exynos 8890. In head-to-head tests the Snapdragon is noticeably slower with hours less of battery life (http://www.gsmarena.com/samsung_galaxy_s7_exynos_8890_vs_snapdragon_820_speed_test-news-17429.php). Apparently Samsung was required to use the Snapdragon in the US market for its CDMA support.
Interesting how it was all about her when Theranos was the best thing since slice bread but suddenly it's "we" in her statement yesterday even though she was the one specifically banned from the industry for 2 years.