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My work entails frequent travel across the country. I carry two mobiles, one personal and the other, official. Is there any mobile phone that supports two SIM cards, so I can be spared the hassle of carrying two mobile chargers and handling two systems?

Ranjith K Dual SIM mobile phones have now been introduced in India. These support two SIM cards in a single handset, so users can switch between two numbers or networks. Depending on the mobile model, you may use a combination of one CDMA sim card and one GSM sim card, use either both CDMA sim cards or both GSM sim cards.

In India, Spice Mobile launched the first dual-mode mobile phones. It offers two variants, D-88 and D-80. The D-88 Supports both GSM and CDMA, on the other hand the D-80 can support two GSM connections. The D-88 supports 1.3 megapixels camera, with 262K color TFT display, MP3 playback, etc.

Samsung and Tata Indicom have introduced India’s first touch-screen based Dual SIM card phones named “Samsung Duo”. According to Samsung’s Web site, you can use two CDMA numbers or two GSM numbers or one CDMA and one GSM numbers. Duo is a quad band device supporting CDMA 800 & 1900 MHz bands and GSM 900 &1800 MHz band. The handset operates on the Tata Indicom network as well as GSM networks in India and internationally. You can switch between the two networks easily without the need for restarting the handset. Samsung Duo supports two SIM card slots that allow operation of two numbers on Duo non-simultaneously. It, however, supports call forwarding facility on both GSM and CDMA, which facilitates incoming calls from both the numbers. Call forwarding is, however, network-dependent. The specifications are 262K TFT display – 2.2 inch TFT Touch Screen, 1.3 megapixels camera with 10X digital zoom, video recording, MP3 player, Micro SD card slot, support up to 1 GB of external memory, Bluetooth support, handwriting recognition, etc.

For more information about Samsung Duo, please look up the following URL:

http://www.samsung.com/in/products/cdma/cdma/sch_w339.asp?page=Features

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