iPhone is largest product launch in history

[aryayush]

Ha! Ha! Ha! Ha!

Seriously, you'll regret skipping classes all your life.


I doubt CDMA is even there in the USA. iPhone is a GSM handset. Verizon, Vodafone, Cingular, Sprint, Orange, Nextel are all GSM carriers. You know nothing about anything. Why do you have to keep advertising that?

Dude, don't ever say that again to someone. Seriously.

 

[amitava82]

No, they don't. Well, Reliance is pretty famous in Bengal so I thought it has a very large market share. Which is the company with the largest share?

I think Reliance Smart is available only in West Bengal and Orissa. Airtel has largest market share and largest subscriber base in Karnataka. R u sure iPhone will be a locked one? I have doubt. anyway I'm ready to pay Rs.25K MAX for 8GB version...

 

[aryayush]

No chance. 25K for the four gigabyte model might happen though.

 

[infra_red_dude]

& iPhone as well as all mobile phone carriers in US of A are CDMA based

no they are not. tho a major part of the US is cdma based, but gsm has its share too. and to my knowledge as of now there is NO cdma based iphone. cingular, tmobile haf gsm networks whlie verizon is a major cdma player.

had read that talks between apple and verizon (which has cdma network) broke and apple finalised the deal wid cingular which happends to be based on gsm. since the iphone will be locked, it'll be available as gsm only. i believe these talks took place before the design of the iphone was complete. otherwise switching the circuitary from cdma to gsm is not easy after the device has completed the design phase. i dunno if a cdma/wcdma model is in the making.

i suspect either hutch-vodafone or airtel to bring iphone in india. tho airtel has the largest and the best network, vodaphone is an international company. reliance wants every product of theirs to be advertised as cheap and affordable and 25k+ is definitely neither cheap nor affordable!!!

I doubt CDMA is even there in the USA.

US, japan etc. haf a cdma majority while gsm is minority there!! but its the other way round all over rest of the world. gsm is the most widely used standard.

iPhone is a GSM handset.

correct!!!

Verizon, Vodafone, Cingular, Sprint, Orange, Nextel are all GSM carriers.

verizon, sprint, nextel are all major cdma carriers in the US while they haf a very very small or nil gsm backbone.

guess u too miss a lot of classes looks like saurav has company in his class

 

[gxsaurav]

guess u too miss a lot of classes looks like saurav has company in his class

He is sooooooooooooooooo junior to me

 

[aryayush]

@infra_red_dude,
Well, I have absolutely no qualms in accepting it when I am wrong about something. My sister has recently been married and has gone to USA and she told me that there are no CDMA carriers there. Then again, they live in a small town so maybe they don't have it there. It is also quite possible that my sister wasn't that well informed. They are shifting to San Francisco/California now - lucky chaps!

Anyway, thanks for the new info. It did sound strange even to me that USA wouldn't have something that we have in India. The iPhone and AT&T/Cingular are GSM based, that's for sure.

*img504.imageshack.us/img504/908/mactw1.jpg

 

[infra_red_dude]

@infra_red_dude,
Well, I have absolutely no qualms in accepting it when I am wrong about something.

and thats the correct attitude! forums like these are all abt teaching and learning. i learn something new from u, u learn something new from me. i accept my mistake, u accept urs. follow this and it will not lead to banning of anyone even tho u can haf really interesting discussions and debates!

 

[aryayush]

Exactly. Wish more people had such an attitude. (Now I'm boasting! )

BTW, if you know about this, can you tell me how exactly do they lock cellphones to certain carriers even when the connection is GSM based? Why can't we simply change the SIM card like we can in India?

*img300.imageshack.us/img300/381/aryayushuserbarkm0.gif

 

[goobimama]

^^ I got warned some time back for cheating my way in adding a banner-siggy...

 

[aryayush]

Uh oh. OK. This stops now. I spent time on that thing though.


One last time wouldn't hurt though...

*img300.imageshack.us/img300/381/aryayushuserbarkm0.gif

 

[krazyfrog]

If it costs 25k and comes with airtel, then i'd definitely try to convince my parents to buy it.

 

[infra_red_dude]

BTW, if you know about this, can you tell me how exactly do they lock cellphones to certain carriers even when the connection is GSM based? Why can't we simply change the SIM card like we can in India?

afaik, the service provider embedds a lock code into one of the rom chips of the phone. the unlock code of which is available wid either the service provider's sim card or in some of the bits of the transmitted signal from the SP.

when u switch on the phone, before it searches for the network it tries to find the unlock code on the sim card. if it is of the same provider then it unlocks the phone and makes it usable by letting it search for its SP's signal. if the signal contains the unlock code then as soon as it is turned on it beams back the service provider info obtained from the sim card. if it gets a matching signal wid the unlock code it becomes usable (in case of roaming ,the signals and unlock code is routed thru the partner service provider's network).

if however the sim is of a diff service provider then it won't haf that specific unlock code and ur phone becomes unusable. previously the locking info was stored in the firmware. this protection was cracked and people cud easily unlock it by entering a code or flashing. but now i believe its on a rom chip which can be unlocked only wid special service cable and software by flashing the rom contents to that of an unlocked phone.

i suspect the method of carrying unlock code in signal is not employed. its mostly rom programming, afaik. dunno if this has been cracked too and there is a newer technology being used.

 

[aryayush]

Cool man, you really know your stuff. That was very informative. Thanks!

 

[infra_red_dude]

i'm not sure which method of locking is used as on today coz everything is man made and hence vulnerable. this may haf been cracked too. but it gives an insight of how gsm phones can be locked. the basic principle can be easily understood!