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Home > Cell Phone Forums > Carriers Talk > AT&T Talk > Sim Lock Problem

Sim Lock Problem

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channahc
Antenna Booster Novice
Posts: 2
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Tue Oct 12, 2004 6:36 am 
I would like to buy a cell phone from Cingular, and bring it back to Hong Kong. But I know all Cell phone has sim lock, so user cannot use other sim card form other service provider. So how can I unlock the sim lock?
Do i just call Cingular? Does it has any requirement, like use their service for at least 2 months.....

Thanks
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JCMyersIV
Radiation Shield Addict
Posts: 122

Phone Model:
V635 & BB 7290

Service Provider:
Cingular
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Tue Oct 12, 2004 8:51 am 
Usually, you need to complete the terms of your contract to get the unlock code. Otherwise, there are several services on-line that will unlock your phone for you (usually $10-25). SIM lock is different than the phone being locked - phone being locked means you can only use the company that sold you the phone's SIM cards. Sometimes, its also known as a subsidy password, b/c the providers subsidize the phone in exchange for your agreement to buy service from them for the next year or two.
Nesper
Antenna Booster Novice
Posts: 2
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Tue Oct 12, 2004 10:37 am 
Cingular world-band phones are not locked.
channahc
Antenna Booster Novice
Posts: 2
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Tue Oct 12, 2004 3:33 pm 
Nesper wrote:
Cingular world-band phones are not locked.


Really?! I am going to buy the Samsung X427
so i don't need to do anything, then i can use it in Hong Kong?

scapegoat
Radiation Shield Addict
Posts: 60

Phone Model:
Nokia 3600

Service Provider:
Cingular
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Tue Oct 12, 2004 4:24 pm 
nope nope nope.. dont wanna do that... first of all the Samsung X427 is only 850/1900 GSM..... the frequeny used over in HongKong is 900/1800.

So the X427 would not work in Hong Kong..
JCMyersIV
Radiation Shield Addict
Posts: 122

Phone Model:
V635 & BB 7290

Service Provider:
Cingular
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Tue Oct 12, 2004 10:15 pm 
...there's no 850 or 1900 spectrum in Hong Kong? I know I used to be able to use my TDMA phone 850/1900 there, but I heard recently the HK gov't may revoke the TDMA license, as subscribership had dropped to around 30K lines.

I looked on GSM World for the providers in HK, and didn't see any of them listed with 850/1900 service - all were listed at 900/1800. If the site is correct (I have no reason to believe it isn't), the last post is correct - you would need a tri or quad band phone to work over there.
SekzG
3D Hologram Enthusiast
Posts: 10
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Wed Oct 13, 2004 9:35 pm 
JCMyersIV wrote:

I looked on GSM World for the providers in HK, and didn't see any of them listed with 850/1900 service - all were listed at 900/1800. If the site is correct (I have no reason to believe it isn't), the last post is correct - you would need a tri or quad band phone to work over there.



Lg L1200 supports 850/1800/1900, and the Motorola v400/600 support all 4 bands. Also the motorola v220 supports 850/900/1900
gheaton2
Antenna Booster Novice
Posts: 3

Phone Model:
Samsung X427

Service Provider:
Cingular
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Sat Oct 23, 2004 3:30 pm 
I have the X427 from Cingular in the States (US), but want to use it with other service providers in Brasil and Chile. That way, I can still use Cingular, but also have two other providers (where I travel frequently), but use only one phone (with three chips, right?). Can someone tell me how to do this? Please email. Thank you,
gheaton2@hotmail.com
JCMyersIV
Radiation Shield Addict
Posts: 122

Phone Model:
V635 & BB 7290

Service Provider:
Cingular
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Sun Oct 24, 2004 11:01 pm 
In order to use a non-Cingular SIM in a Cingular subsidized phone, you need an unlock code. If you served the terms of your contract, Cingular should provide you the unlock code. Otherwise, check sites on-line for unlocking. I'm not sure about the Samsungs, but I know you can get a Nokia or Motorola unlocked for $5-20 per phone. Once unlocked, any company's SIM will work - then you're only restricted to frequencies.
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