One of my colleagues has got really cool Nokia handset. It has tons of features and all of us call it as a TV. ;) Since he is a CDMA user, I thought there will not be any card in his new handset. But I was surprised to see the SIM Card like card in it. It is called as UIM or to be precise R-UIM.
I have been using GSM phone since long time now and somehow got fascinated by the Subscriber Identity Module (SIM) card. Everybody knows the functions of SIM card in a GSM phone. That triggers to one more question. What is the use of R-UIM card in CDMA phone?
If you look at this card then you will know that it looks exactly similar to the SIM card. To start with, the long form of R-UIM is: Removable User Identity Module. It seems that NAM1 and NAM2 settings are stored on this equivalent card. It is also standard method used for international CDMA roaming.
So, if you are CDMA user then should you be really bothered about UIM card? Answer is yes. For example, if you are using handset which supports UIM card. And you are using Reliance CDMA number. Now, if you want to switch to Tata Indicom CDMA, what will you do? Earlier you have to throw the Reliance handset and buy a new one from Indiacom. Now, with UIM card, you can just put Tata Indicom card in your handset and you are free to use new number with the same device. ;)
Cheers,
Amol
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