Several smartphone models introduced by LG Electronics between 2015 and 2016 were discovered by users to have manufacturing defects, all of which eventually cause the devices to become unstable, or suffer from a bootloop, rendering them effectively inoperable. The LG G4 (2015) has been the most synonymous with these failures, with LG stating that the issues were the result of a "loose contact between components". Similar issues have also been reported to a smaller extent with the G4's successors and sister models, including the Nexus 5X, LG V10 and LG G Flex 2.
In March 2017, a class-action lawsuit was filed against LG in regards to their handling of these hardware failures.