EWG study analyzed 1,268 mobile cell phones radiation emissions. Find yours...

Apple iPhone, 3G, 3G S are mid to high.

  Top 10 make model with least radiation:
  1.Samsung Impression (SGH-a877) [AT&T]
  2.Motorola RAZR V8 [CellularONE]
  3.Samsung SGH-t229 [T-Mobile]
  4.Samsung Rugby (SGH-a837) [AT&T]
  5.Samsung Propel Pro (SGH-i627) [AT&T]
  6.Samsung Gravity (SGH-t459) [CellularONE, T-Mobile]
  7.T-Mobile Sidekick [T-Mobile]
  8.LG Xenon (GR500) [AT&T]
  9.Motorola Karma QA1 [AT&T]
  10.Sanyo Katana II [Kajeet]

"Data source: manufacturer"

Also the models seem pretty old. I'm from Europe so I guess some of them are US only but not all.