"home zone" functionality

Alexey Feldgendler alexey at feldgendler.ru
Thu Apr 17 10:59:04 CEST 2008

On Thu, 17 Apr 2008 10:34:20 +0200, Tilman Baumann <tilman at baumann.name>  

> The home zone icon uses a rather strange SMS feature.
> I don't know details. But there are several message types.
> Like messages which pop up without asking the user to open it.
> Or like the O2 logo. Which is a SMS with (smehow) a emebedded pictogram  
> ebedded. Which your phone shows in some status bar or the background.
> This icon can only be re-set if you get a special delete SMS.

AFAIK there are no such things as executable code in SMS. There are  
specially formatted SMS that set or recent certain flags. For example,  
there are standardized flags (and ways to set and reset them) for  
voicemail and fax icons. O2 is probably using an undocumented (reserved)  
flag bit for their home icon.

Alexey Feldgendler <alexey at feldgendler.ru>
[ICQ: 115226275] http://feldgendler.livejournal.com

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