New way to lock sim cards - GSM-Forum

lugonza · 03-01-2005, 03:32

Here is my situation. There are few Carriers ( GSM ) that are locking the sim card to the IMEI of the phone. When you buy the phone together with the sim card you can not use that sim card with another phone, even if the other phone is unlock. Seems like the sim card is married to the original IMEI of the phone you first bought, therefore there is no way for you to change to a better phone without changing your sim card. Is there any way to around this situation? .

Thanks

lugonza · 03-02-2005, 14:43

Anybody with an explanation?

Dave.W · 03-02-2005, 16:40

hi man, this wont help..

here in the uk, we had one phone released maybe 6/7 years ago "philips c12/savvy".
these had some lock so the sim would only work in the phone it came with..

no one ever cracked that

but unlocking was not so big business then.
these days, if there is demand, then be sure someone is working on it already

Dave.W · 03-02-2005, 16:42

actually, i read your problem again mate,

dont expect a solution to that..
it seems you would need to edit data on the sim card..
new sim cards can not be cloned as it is never cracked

so you wouldnt be able to edit the card..

if you have upgraded to a new phone, just phone the carrier and they should release the sim for you..
thats the best i suggest

gbrooks3 · 03-03-2005, 22:16

I think problem is not locked. But phone imei is "latched" the "mother network" this is what i hear. A good example is SE V800 phone

(no not 3g probs this is other problem)

Dehghani · 03-06-2005, 07:43

Quote:

Originally Posted by lugonza

Here is my situation. There are few Carriers ( GSM ) that are locking the sim card to the IMEI of the phone. When you buy the phone together with the sim card you can not use that sim card with another phone, even if the other phone is unlock. Seems like the sim card is married to the original IMEI of the phone you first bought, therefore there is no way for you to change to a better phone without changing your sim card. Is there any way to around this situation? .

Thanks

simply change imei of unlocked phone

let · 03-24-2005, 21:47

after changing imei flash phone so u would have no prob.

Dave.W · 03-25-2005, 02:40

what is the benefit to flash after imei rebuild?

***Gsm Lab*** · 03-25-2005, 08:45

some time u r dct3 phone imei not rebuild the set signal problem the set signal up down appear disappear u rebuild imei the set ok .........

the insaan · 03-25-2005, 13:49

Quote:

Originally Posted by majid rocky

some time u r dct3 phone imei not rebuild the set signal problem the set signal up down appear disappear u rebuild imei the set ok .........

this is true i have experienced similar problem with nokia 8210 phones

AntiXrysT · 03-27-2005, 13:35

Ive got an 8310 ex contract but it doesnt take sims on o2 for a strange reason, any ideas why?

BadUnlockers · 04-05-2005, 15:23

Hmm...
Try and change the imei of the new fone to the one patched to ur simcard and see what happens...

Br
Didi

phonezoneshop · 04-05-2005, 15:43

something to do with esn?? tried long time ago with old bt phone with free calls to one number//

03-01-2005, 03:32	#1 (permalink)
lugonza Freak Poster Join Date: Feb 2004 Posts: 226 Member: 56071 Status: Offline Thanks Meter: 0	New way to lock sim cards Here is my situation. There are few Carriers ( GSM ) that are locking the sim card to the IMEI of the phone. When you buy the phone together with the sim card you can not use that sim card with another phone, even if the other phone is unlock. Seems like the sim card is married to the original IMEI of the phone you first bought, therefore there is no way for you to change to a better phone without changing your sim card. Is there any way to around this situation? . Thanks

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03-02-2005, 14:43	#2 (permalink)
lugonza Freak Poster Join Date: Feb 2004 Posts: 226 Member: 56071 Status: Offline Thanks Meter: 0	Anybody with an explanation?

03-02-2005, 16:40	#3 (permalink)
Dave.W No Life Poster Join Date: Nov 2001 Location: England Age: 41 Posts: 2,821 Member: 7653 Status: Offline Thanks Meter: 823	hi man, this wont help.. here in the uk, we had one phone released maybe 6/7 years ago "philips c12/savvy". these had some lock so the sim would only work in the phone it came with.. no one ever cracked that but unlocking was not so big business then. these days, if there is demand, then be sure someone is working on it already

03-02-2005, 16:42	#4 (permalink)
Dave.W No Life Poster Join Date: Nov 2001 Location: England Age: 41 Posts: 2,821 Member: 7653 Status: Offline Thanks Meter: 823	actually, i read your problem again mate, dont expect a solution to that.. it seems you would need to edit data on the sim card.. new sim cards can not be cloned as it is never cracked so you wouldnt be able to edit the card.. if you have upgraded to a new phone, just phone the carrier and they should release the sim for you.. thats the best i suggest

03-03-2005, 22:16	#5 (permalink)
gbrooks3 No Life Poster Join Date: Jul 2004 Location: 0xBA, 0xBE Age: 38 Posts: 690 Member: 73743 Status: Offline Thanks Meter: 2	I think problem is not locked. But phone imei is "latched" the "mother network" this is what i hear. A good example is SE V800 phone (no not 3g probs this is other problem)

03-24-2005, 21:47	#7 (permalink)
let Junior Member Join Date: Mar 2005 Location: cools ville Age: 44 Posts: 4 Member: 127827 Status: Offline Thanks Meter: 0	after changing imei flash phone so u would have no prob.

03-25-2005, 02:40	#8 (permalink)
Dave.W No Life Poster Join Date: Nov 2001 Location: England Age: 41 Posts: 2,821 Member: 7653 Status: Offline Thanks Meter: 823	what is the benefit to flash after imei rebuild?

03-25-2005, 08:45	#9 (permalink)
*Gsm Lab* Super Moderator Join Date: Feb 2005 Location: United Arab Emirates , Dubai Age: 38 Posts: 4,249 Member: 113928 Status: Offline Sonork: 100.111866 Thanks Meter: 1,838	some time u r dct3 phone imei not rebuild the set signal problem the set signal up down appear disappear u rebuild imei the set ok .........

03-27-2005, 13:35	#11 (permalink)
AntiXrysT Freak Poster Join Date: Jan 2005 Location: Scotland Age: 37 Posts: 115 Member: 110542 Status: Offline Thanks Meter: 1	Ive got an 8310 ex contract but it doesnt take sims on o2 for a strange reason, any ideas why?

04-05-2005, 15:23	#12 (permalink)
BadUnlockers No Life Poster Join Date: Nov 2003 Age: 39 Posts: 1,463 Member: 44610 Status: Offline Thanks Meter: 50	Hmm... Try and change the imei of the new fone to the one patched to ur simcard and see what happens... Br Didi

04-05-2005, 15:43	#13 (permalink)
phonezoneshop Freak Poster Join Date: Mar 2004 Location: Kent UK Posts: 395 Member: 59751 Status: Offline Thanks Meter: 26	something to do with esn?? tried long time ago with old bt phone with free calls to one number//