known among users and the media as "Bendgate". Apple responded to the bending allegations, stating they had only received nine complaints of bent devices and that the damage occurring due to regular use is "extremely rare." The company maintained the iPhone 6 and 6 Plus went through durability testing to ensure they would stand up to daily use. The company offered to replace phones that were bent if it is determined the bending was unintentional. In May 2018, as part of a lawsuit against Apple regarding touchscreen failure, it was revealed via internal documents that Apple knew the iPhone 6 and 6 Plus phones were more likely to bend than previous models. According to the court documents, Apple's internal tests found the iPhone 6 was 3.3 times more likely to bend than the iPhone 5s, while the larger iPhone 6 Plus was 7.2 times more likely to bend. Hair ripping On October 3, 2014 9to5Mac released a post claiming certain iPhone 6 and iPhone 6 Plus users complained on social networking sites the phone ripped off their hair when they held the phone close to their ears when making phone calls. Twitter users claimed the seam between the glass screen and aluminum back of the iPhone 6 was to blame, with hair becoming caught within it. Flash storage performance Some users reported the 64 and 128 GB iPhone 6 models had experienced performance issues, and that some 128 GB iPhone 6 Plus models would, in rare cases, randomly crash and reboot. Business Korea reported the issues were connected to the triple-level cell NAND storage of the affected models. Triple-level NAND flash can store three bits of data per cell of flash, and are cheaper than dual-level cell solutions, but at the cost of performance. It was reported Apple had planned to switch the affected model lines back to multi-level cell flash, and address the performance issues on existing devices in a future iOS update. iPhone 6/6 Plus camera issues It was reported the optical image stabilization systems on some iPhone 6 Plus models were faulty, failing to properly stabilize when the phone is being held perfectly still, leading to blurry photos and "wavy"-looking videos. The optical image stabilization system was also found to have been affected by accessories that use magnets, such as third-party lens attachments; Apple issued advisories to users and its licensed accessory makers, warning magnetic or metallic