BlackBerry phone introduction: the North American smartphone dominant that hitched a ride with 911

The "BlackBerry" mobile email device is based on two-way paging technology. This device, when combined with RIM's servers, relies on specific server software and terminals, and is compatible with existing wireless data links, realizing the dream of sending and receiving emails anytime and anywhere across North America. This device does not catch the eye with a high-pixel camera or a dazzling color screen, and it doesn't even have a speaker. How did such an anti-trend cell phone become the top smartphone in market share in North America? Besides the unique email technology advantage of BlackBerry phones, the 9/11 event must also be mentioned.