<br><br><div class="gmail_quote">On Wed, Jun 11, 2008 at 1:59 AM, Joerg Reisenweber <<a href="mailto:joerg@openmoko.org">joerg@openmoko.org</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
I heard Nokia needs a reboot to switch, and eats battery as if there's no<br>
tomorrow on 3G ;-)<br>
<font color="#888888">/j</font></blockquote><div><br>That's (partly) true.<br>Nokias Symbian S60 and their S40 phones need to reboot - but that's only a software problem and I don't really know why they do that.<br>
If you have a 2G+3G modem you can talk hayes to, it is no problem to switch without powering off.<br>Via AT-Commands (at+opsys) it's mostly possible to switch between 5 states: only 2g, only 3g, 2g preferred, 3g preferred, auto (depends on the modem) more or less on-the-fly.<br>
I guess they do that to bypass some problems that for example gsmd-users experienced :-)<br>The battery problem is a bit odd, too - especially because technically umts takes less power - in use and even less in standby. It powers up on higher data rates what of course will take some power.<br>
So why is this? First I think it's because if the relatively bad 3G-coverage that causes a weaker signal. The other point is that GSM is a pretty old (for techies :) and more than just widely used and mature technique.<br>
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