Apple's 12 secondary card always pops up with a short message.

The message received by the secondary card means that the message sent by others has been sent to your secondary card. Because the number entered is the number of the secondary card.

Apple is a high-tech company in America. Founded by Steve Jobs, Stephen Gary Wozniak, Ron Wayne and others on April 1976, it was named Apple Computer Company of the United States, and was renamed Apple Company on October 9, 2007/KLOC-0, with its headquarters in Cupertino, California.

Development history

When Apple was founded, it mainly developed and sold personal computers. By 20 14, it has devoted itself to designing, developing and selling consumer electronic products, computer software, online services and personal computers. Apple's Apple II started the personal computer revolution in1970s, and the Macintosh relay continued to develop in1980s.

The company's hardware products are mainly Mac computer series, iPod media player, iPhone smart phone and iPad tablet computer; Online services include iCloud, iTunes Store and App Store；; Consumer software includes OS X and iOS operating systems, iTunes multimedia browser, Safari web browser, and iLife and iWork creative and production kits. Apple is famous for its innovation in high-tech enterprises.