Notification bar--find a NCSettings and open it---set up the notification center---then the top icon will appear.
Introduction to Apple:
Apple Inc. is an American high-tech company that was renamed in 2007 from Apple Computer, Inc. Lai, its core business is electronic technology products, headquartered in Cupertino, California. Apple was founded by Steve Jobs, Steve Wozniak and Ron Wayne on April 1, 1976. It is famous for innovation among high-tech companies. Its famous products include Apple II and Macintosh. Computers, Macbook laptops, iPod music players, iTunes stores, iMac all-in-one computers, iPhones and iPad tablets, etc. It is known for innovation among high-tech companies.
On November 26, 2014, Apple's market value exceeded US$700 billion for the first time on Tuesday, becoming the first company in the S&P with a market value exceeding US$700 billion. On August 26, 2015, Germany's Supreme Court of Appeal ruled on Tuesday that Apple's patent on the "slide to unlock" function of smartphones is invalid.
On April 22, 2016, Apple confirmed that Apple’s two major Internet services, iTunes Movies and iBooks Store, were closed in China. In September, Apple’s first R&D center in China was established in Chaoyang Park, Zhongguancun, Beijing. On November 25, Apple updated its iPhone warranty policy in China, no longer requiring replacement.