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Samsung U100 Ultra 5.9 Review

Samsung SGH-U100 Ultra 5.9

Posted: , posted by PhoneArena Team



As you have noticed, the U100 is very slim, and very elegant, but in order to be reduced the size, some features are cut, some are with reduced quality. As you cannot put large display on a small phone, it is hard to put strong antenna in a phone that small and slim. In our test for reception level, the U100 scores the lowest results among the Ultra series, and one of the lowest ever. We rate it 2 out of 10, which means that if you are in a fringe area, consider other phone with stronger reception.

But if you have strong signal will experience superb sound quality, which seems to be typical for Samsung phone, even thin ones. The microphone does excellent job for the voice conversations and deliver strong sound, realistic and crystal clear, but with a minor decrease in the high-frequencies of the voices. The incoming sound is stronger and the voices sound very realistic. We definitely like how the U100 sounds in both directions.


If you are on the market, searching for SLIM phone – this is the phone you should look at. Keep in mind it is tri-band only, and is not fully usable in the States. The slimmest phone in the world, this one is way slimmer than rival models of other manufacturers, like the SLVR of Motorola for example. Still, Samsung has managed to pack a decent browser and camera (plus camcorder) and nice functionality, but we are sorry some of its features (like the Phonebook) are older version with less functionality than the new ones (that of U700). Still, one should compromise for the slim and sexy design of the U100, which is worth it.


  • Slimmest on the market
  • Usable keyboard, way better than the one of U700 and U300
  • Solid construction, although very thin


  • Tri-band means it won’t be fully usable in America
  • Camera lacks autofocus and flash
  • Lack of memory Card slot limits you to the internal memory
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Display1.9 inches, 220 x 176 pixels (146 ppi) TFT
Camera3 megapixels
Size4.15 x 1.97 x 0.23 inches
(105.5 x 50 x 5.9 mm)
2.32 oz  (66 g)
Battery630 mAh, 3.5 hours talk time

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