The best replacement for caller id is ani.

The best alternatives to caller id are rated as following:
★★★★★  ani
★  blocked
★  unknown
★  answering machine
★  call display

Your alternative for caller id is not listed? Suggest!
Speaking about caller id, one probably shouldn't forget about call block.

Other search terms related to caller id and their ratings are:
★★★★★ call block
★★★★★ call waiting
★ anonymous call block
sms
modem
answering machine
You have in mind a companion for caller id and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of caller id in all years. Click on graph for more.
caller id
ani
blocked