On Tue, 2002-02-05 at 03:06, Matthew Flax wrote:
> > 
> > The main problem with Matthew's solution is the short life span of SIM
> > memory: using Flash technology, SIM memory cards are limited to 10,000
> > writes to each bit of memory. when usage exceeds this bound, the card
> > will become useless and inoperatable.
> 
> I am skeptical that this is the case. There are people who've used their 
> SIM cards for years. Regular handsets operate by saving incoming messages 
> to SIM memory. Now these peoples SIM memories still work. Has anyone ever 
> experienced this problem with their mobile SIM cards ? Surely 
> microchip etching technology has improved since the first SIM cards which 
> used to have some warning.

AFAIK, flash is still limited - my sources tell me that current
technology stands at about 10,000 writes. the reason that you don't
usually encounter this problem in handsets, is that even the most used
phones never reach the 10,000 limit (multiply this by the number of
memory slots, of course) - for example, I'm using the same handset for
the last three years or so, and while I'm not a really avid SMS user, I
don't think I've got more then a thousand messages in all that time
(including push promotions, which I get about one or two a week -
luckily SMS advertising isn't really kicking in in Israel, otherwise I
would be in trouble ;-).

 
Oded Arbel
m-Wise inc.
[EMAIL PROTECTED]

--
Always remember that the weapon you hold was manufactured by the lowest
bidder.
        -- Finagle's Military Laws n�11


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