Their real strength is in the medical market, where doctors and hospitals still rely on them because they more reliably penetrate buildings, and they can be used in areas where cell phones are banned due to concerns they’ll interfere with medical equipment (or interfere with hospitals’ revenue from high-price in-room telephones for patients). But the days of the venerable pager look numbered: hospitals’ attitudes about cell phone use are starting to shift, while many are installing WiFi-based systems that offer far greater functionality than simple paging.
I personally don’t know anyone who actually still uses a pager, but there apparently still is a need for them. Even with these new technologies being implemented, I wonder how much longer they will last?