Hi all, can I know whats the difference between 16k/32k/64k/128k sim card? Let say I'm using 16k sim card, am I able to enjoy full 3G speed while surfing?

Thanks.

the capacity is different..
thats all i think..
not sure..
wait pro come in give comment..

Should be the capacity only but some people say 3G need to be 128k to enjoy full speed not sure about this

so nobody know nothing ?

I googled about this and did'nt get any answer
just found this thread

128k can store more function such as 3g and number

smartcard (in general) or SIM card (for mobile) is like a ultra-micro-mini computer.

it has a processor and storage. This storage is very small because it serves a very basic function (like floppy -> cd -> hdd).

similar to hdd, u have different type of "partitions" for different kind of "applications"

the larger the size, the more "applications" can be fit into.

why 3G sim (it's called USIM or Universal SIM) starts from 128K because it needed a dedicated "application" for 3G functionality.


off-topic: do you know our MyKad has different functions? National ID, e-passport, drivers license, MEPS, ATM, Touch'n'Go?

all these are individual "applications" stored inside a smartcard chip.

Each application DOES NOT interfere with the others. It has it's own multi-level encryption and authorizations.

Each entity (or govt / private agencies) dictates their own security and HIGHLY proprietary. Each security level has 2 type of encrytion/decryption key: PRIVATE and PUBLIC.

for e.g. to access drivers license, u need the PUBLIC decryption key and access authorization from National Transport Dept.

To update your IC, u go to National Registration Dept. To reload TnG, u go to Touch'nGo counters

why we can "read" these info everywhere because data is retrieved ONLY (with PUBLIC DECRYPTION key). You CAN NOT write/overwrite any information into the chip without knowing the PRIVATE DECRYPTION/ENCRYPTION key.

ohh thanks that was helpful

it's mean for 3G user better take 128k sim right ?

will get mine soon

capacity n speed broo..

Capacity only. NOT speed. The reason why they need the extra storage is to store all the configuration and added features on the SIM. Nowadays we don't store our contacts on the sim itself so pretty much you can neglect the storage size as long as the sim itself can offer the added 3g functionality. The speed depends highly on the package which you signed in and the coverage area. Surfing on a congested zone might yield a lower speed. Just my 2 cent

no such thing my old maxis simcard is 64k not upgraded to 3G. I just need press code to activate 3G using till now also no problem.


The 16k,32k,64k and so on its the memory capacity how much it can store such as smses and phonebook including some additional features

128k can store more contact num i think

Yes. But what's the use of storing 1 name with 1 number when today's contact storage is somewhat limitless.

http://en.wikipedia.org/wiki/Universal_Sub...ity_Module#USIM

http://www.justaskgemalto.com/en/communica...-and-usim-cards

Gemalto is a very huge corporation, merged between Gemplus and Axalto few years back. A LOT of smartcard/sim card/credit card uses Gemalto's chip.


Also, there will be 1MB USIM (or MegaSIM). Google it.

This post has been edited by cybpsych: Oct 11 2009, 07:38 AM

Any of the teleco provide 256K simcard? So far I know is maxis provide only.

Actually does it matter? How often do you use the simcard memory?
These days ppl use phone memory


Even it support the sim memmory they divide it to like 5 phonebook.

This post has been edited by aspire2oo6: Oct 11 2009, 10:24 AM

Why do you need such big simcard?

the sad thing is that the divided phonebook is not linked to each other... if i switch phonebook2 d and my fren in phonebook1 called, no name will come out... duH~

lulz so it does'nt affect 3G speed at all

no need change,keep my 16k sim

not effected i am also using 16k sim card for my 3G also no problem

then copy the contacts in the sim to your phone.