iOS 11.3 was launched by the company Apple Lossless Audio CODEC (ALAC), for iPhone, iPad and iPod Touch the other day, a very important function being implemented by Apple companies for us. More specifically, iOS 11.3 allows the viewing of information on the "health" of the battery, and users can also disable the iPhone's performance limitation system.
iOS 11.3 brings this functionality to almost all Apple iPhones, with the exception of the iPhone 5S, for which it does not exist and will not exist. Apple announced that iOS 11.3 displays information on the "health" of the battery only for phones with limited performance, and the iPhone 5S is not among them.
Since the iPhone 5S does not have the limited performance of iOS due to the "health" of the battery, it is normal that the information regarding them is not displayed. Despite the fact that the iPhone 5S does not have performance limited by those from Apple through iOS 11.3, or other versions, it is still recommended that the battery be replaced by users.
iOS 11.3 can currently be installed on any of Apple's iPhones, iPads and iPod Touches, and here we have explained how to disable iPhone performance limitation.
