The best replacement for smart phone is cell phone.

The best alternatives to smart phone are rated as following:
★★★★★  cell phone
★★★★  tablet
★★★★  android
★★★  pda
★★★  non smart phone
★★★  basic phone
★★★  smartphone
★★  feature phone
★  regular phone
★  multi media phone
★  i phone
★  pda phone
★  flip phone
★  pocket pc phone
  netbook

Your alternative for smart phone is not listed? Suggest!
Speaking about smart phone, one probably shouldn't forget about no data plan.

Other search terms related to smart phone and their ratings are:
★★★★★ no data plan
You have in mind a companion for smart phone and it is not yet here? Propose!



Google Trends

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