The best replacement for 9900 is 9810.

The best alternatives to 9900 are rated as following:
★★★★★  9810
★★★★★  9790
★★★★★  q10
★★★★  9930
★★★  9360
★★★  9800
★★★  9860
★★  9720
★★  torch 9810
★★  9780
★  epson 2200
★  9700
★  9320
★  9790 blackberry
★  8900
★  9380
  blackberry curve 9360
  armortec 900
  m11
  samsung galaxy s 3
  torch 9860
  blackberry torch 9810
  9000
  torch
  curve 9360
  9950

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Speaking about 9900, one probably shouldn't forget about 9790.

Other search terms related to 9900 and their ratings are:
★★★★★ 9790
★★ 9930
★ red cross through battery
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9900
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