Nokia Lumia 900 Dual Cell smartphone and much more!

Nokia's recently announced Lumia 900 got good reviews in terms of its design, ease of use, Windows OS etc, but for me this phone represents a truly feature packed device from a radio point of view.

Having a look at its specifications we can see it supports the 3GPP release 8 HSPA+ Dual Carrier/Cell feature with a theoretical DL speed of 42Mbps. Even though there have been a few DC smartphones out already, these have been launched in the US and to my knowledge this is the first European DC smartphone.

Furthermore the Nokia Lumia 900 also has Rx diversity meaning that it has two receive antennas and can combine the energy received from both of them resulting in a much better Eb/N0. This will mean that the gap between the theoretical and real performance of HSPA will be smaller than a traditional single antenna device.

Naturally the Lumia 900 also supports HSPA+ 64QAM single carrier with a theoretical top speed of 21Mbps.

In addition to all of the above the Lumia 900 also supports DTM (Dual Transfer Mode) which allows the simultaneous data transfer of speech and data in 2G, HSUPA category 6, WB-AMR (a.k.a. HD Voice) and all this is powered by Qualcomm's MDM9200 baseband processor.

A truly radio feature packed phone which makes the iPhone4S and even the more recent Samsung Galaxy SIII look poor in comparison.