The best replacement for pager is cell phone.

The best alternatives to pager are rated as following:
★★★★★  cell phone
★★  beeper
  malem
  beepers
  mobile phone

Your alternative for pager is not listed? Suggest!
Speaking about pager, one probably shouldn't forget about alarm.

Other search terms related to pager and their ratings are:
★★★★★ alarm
You have in mind a companion for pager and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of pager in all years. Click on graph for more.
pager
cell phone
beeper