The best replacement for 4s is 4.

The best alternatives to 4s are rated as following:
★★★★★  4
★★★★  5c
★★★★  s3
★★★  s4
★★★  5s
★★★  5
★★  5s camera
★★  iphone 5
★★  4c
★★  3d first
★  5 iphone
★  4 how to tell
★  nexus 5
★  5s speed
★  5s iphone
★  galaxy s3
★  s2
★  samsung galaxy s3
★  galaxy s2
★  iphone 4
★  note 2
★  nexus 4
★  moto g
★  3s lipo
★  5c camera
★  4g iphone
★  3gs
★  s4 mini
★  carrera s
★  android
★  5s screen size
★  wait for 5
★  3d orbital
★  5c specs
  droid razr
  samsung galaxy
  5s battery
  s
  911s
  htc one
  iphone 5c
  droid bionic
  moto x
  iphone 5s
  galaxy nexus
  samsung galaxy s2
  997
  5 better
  s3 mini
  4g
  2s
  wait for iphone5
  carrera
  htc evo
  htc sensation
  blackberry bold

Your alternative for 4s is not listed? Suggest!
Speaking about 4s, one probably shouldn't forget about siri.

Other search terms related to 4s and their ratings are:
★★★★★ siri
★★★★★ ios 7
★★★★ ios 6
★★ gevey sim
★★ straight talk
★★ gevey
★ aircel
facetime
You have in mind a companion for 4s and it is not yet here? Propose!



Google Trends

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4s
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5c