D980: Samsung DuoS

Samsung D980 DuoS is the third Dual SIM phone presented by Samsung. It was released in October 2008 and designed for the Chinese market (also known as D988 DuoS in other markets).

This iPhone-style phone has a 2.6inches touchscreen, 5 megapixel autofocus camera, microSD slot, Bluetooth 2.0... Both SIMs in Samsung D980 work simultaneously with GSM triband networks (900/1800/1900).

Several opinions can be found at GSMarena review.
Samsung D980 video-review :




Unfortunately, this Samsung DuoS has no 3G.

Via MobileWhack

Samsung D780 Dual Sim

Samsung D780 Dual SIM (also branded as Samsung P240 DuoS) is the second Dual SIM handset made by Samsung.

The most important thing about this phone is the Dual SIM capability. This bar-style phone has a 2 megapixel camera, 2.1-inch TFT display, microSD memory expansion, FM radio, Bluetooth and MS Office document viewer.

Main disadvantages are shown at GSMarena review:

Secondary SIM good for telephony and messaging only
Secondary SIM dual-band only (no 1900 MHz support)
Large size
Interface options well behind the times
Poor sunlight legibility
No 3G support
Portrait-oriented camera
Poor web browser
Awkward file browser
Poor music player

As we can read at Unwiredview, you have to reboot if you want to initiate calls from the "Secondary" card. You can buy it at ebay for about 250$, pretty expensive.

Video-reviews at Youtube:
Allmobiletech Samsung D780 Review:


Phone Arena SGH-D780 Review:

Samsung SGH-D880: Video-reviews

Couple of video-reviews about the first Dual SIM cell phone from a major manufacturer.
TigerTV explaining Samsung D880 features. The guy says it has WI-FI, a feature SGH-D880 does certanly not have, apart from that the review is ok:



Italian review of Samsung D880. It shows how easy is to switch numbers (4.50min). A great & complete review:

Samsung D880 DuoS Dual SIM

Samsung D880 DuoS was the first Dual SIM mobile from a major manufacturer. Several models had been made by little known manufacturers (such as CECT and Anycool) and mainly in Asia before Samsung D880. It was announced in October 2007 and released in December 2007.

Samsung SGH-D880 was headed for mainstream Europe. It can work with both cards simultaneously to make and receive calls, send/receive SMS messages. The phone is only 2.5G as far as Internet access goes. It's a pity that it hasn't got WI-FI connetion.

Main features:
* GSM 900/1800/1900 EDGE connectivity
* 2.3″ QVGA Display
* 3.2 Megapixel camera with autofocus
* FM Radio
* Bluetooth 2.0 A2DP, USB 2.0
* 1200 mAh battery
* Dimensions: 104×51x18.9

It was expected to cost around $700. Nowadays (January 2009) you can buy this slider handset for less than $300.

Full specifications and opinions: gsmarena.com

Via: Unwiredview

Just Dual SIM Phones

In January 2007, Dubao 728 was presented as the first Dual SIM phone.

From then on, a long list of Dual SIM cell phones started to be manufactured. But just few of them were made by famous manufacturers such us Samsung, Motorola and Philips.

As a matter of fact, most of them are Chinese cell phone clons.

The dual-SIM feature allows a device to operate on two different networks at the same time. This is great for those who need two handsets and two different phone numbers (business and personal), as they only have to carry one handset.

From today this blogger will just talk about this kind of phones.

Welcome readers and opinions!