Samsung i640 (also on the Vodafone network i640V) is a slider 3.5G HSDPA compatible with a mobile phone unusual 320 x 240 pixels of the screen.

The specifications on the SGH-i640 show that this is a device capable enough, but it is only a very rehash of recent years, the model of competition and has moved. The 2.4 “QVGA big screen aspect is very good, but it is much smaller than the panel on the Nokia N95 8GB. Curiously, the lack of WiFi i640, and the difference of a large part of the competition The i640 is suffering from a very basic digital camera, GPS, it lacked And does not come with a touch screen.

141MB internal memory, and that is extensible with microSD cards. As is the case for many devices Samsung, the i640 is tri-band GSM 2100 MHz only for 3.5G and 3G WCDMA. Physically, i640 measures that are 95 x 61 x 16mm and weighs 126 grams

In almost all respects, the i620 and i640 are quite identical. The only fundamental difference between the two devices is that the i640 increases the speed of downloading HSDPA at 3.6 Mbps, is the relatively slow 1, 8 Mbit / s on the previous model.

The SGHi-i640 duration of the battery was cited as a maximum of 6 hours up to 15 days in standby mode, even if it is not clear whether, on the 3G or GSM. Vodafone, the i640 contract immediately available to customers in different countries. In the United Kingdom, it is a free £ 30/month a year of the contract.

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