iOS 12 adds major features like Screen Time, but it has plenty of other tricks too. Here are 15 hidden iOS 12 features to know. Readers like you help support MUO. When you make a purchase using links on our site, we may earn an affiliate commission. Read More. iOS 12 is here, and it's not drastically different than iOS 11. But there are a few standout features beyond the obvious performance enhanc