Add-in/Plug-in Software Functionality:

Smart Card SIMS/USIMS
We have already profiled the use of smart card SIMS/USIMS in Chapter 4 on 3G handset
hardware form factor and functionality. Essentially, the smart card USIM is just
another plug-in memory module with a 16-bit or 32-bit microcontroller.
Full-sized ISO cards are also proposed as additional plug-in memory platforms. The
GEMPLUS SUMO card (Secured Unlimited Memory on Card) combines seven flash
memory chips on a smart card and can be used in a digital cellular handset (as a 64-
Mbyte plug-in SIM) or in a PDA, PC, or set-top box. It can support a total of 224 Mbyte
of memory (8 hours of MPEG3 audio, 12 minutes of MPEG video, or 100 e-books) and
has a 20 Mbps data link capability.

In the introduction, we said that the memory footprint in digital cellular handsets
was moving from Megabytes (2G) to Gigabytes (3G). Consider that a typical data
warehouse today is about 10 or 20 Terabytes. Vodafone has a 10-Terabyte data warehouse
to integrate customer complaints and engineering performance. If you had 10
Gbytes in each subscriber device and 100 million subscribers (to use Vodafone as our
example), you would have a 1000-Exabyte data warehouse, equivalent to one Zetabyte
(see Figure 6.6).