If I buy an unlocked phone to use in Europe with a Sim I buy there, can I
use a cingular or other domestic Sim card here and keep the phone unlocked.
In other words will the US carrier lock my phone if I use their service.
Mike S. - 15 Sep 2005 14:20 GMT
>If I buy an unlocked phone to use in Europe with a Sim I buy there, can I
>use a cingular or other domestic Sim card here and keep the phone unlocked.
Yes.
>In other words will the US carrier lock my phone if I use their service.
No, that's not how locking is accomplished.
{{{{{Welcome}}}}} - 15 Sep 2005 14:21 GMT
Thus spaketh Al:
> If I buy an unlocked phone to use in Europe with a Sim I buy there,
> can I use a cingular or other domestic Sim card here and keep the
> phone unlocked. In other words will the US carrier lock my phone if I
> use their service.
Once a phone is unlocked you can use any network, it won't get locked again.
Note your phone will need to be 1800/900 for virtually all countries outside
the USA.

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Joseph - 16 Sep 2005 00:41 GMT
>If I buy an unlocked phone to use in Europe with a Sim I buy there, can I
>use a cingular or other domestic Sim card here and keep the phone unlocked.
>In other words will the US carrier lock my phone if I use their service.
Once it is unlocked it stays unlocked.
- -
www.simcard.me.uk - 16 Sep 2005 11:04 GMT
> If I buy an unlocked phone to use in Europe with a Sim I buy there, can I
> use a cingular or other domestic Sim card here and keep the phone
> unlocked.
> In other words will the US carrier lock my phone if I use their service.
Yes so long as the phones unlocked and triband.

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www.experimentalist.co.uk/forum/index.php Nokia 6630,6680,7710,N91,N90
Unlocking help & Free Sim Card offers.
Will post to USA, Canada, Australia, New Zealand, UK, Germany, France.
matt weber - 17 Sep 2005 03:22 GMT
>If I buy an unlocked phone to use in Europe with a Sim I buy there, can I
>use a cingular or other domestic Sim card here and keep the phone unlocked.
>In other words will the US carrier lock my phone if I use their service.
No. The only phones that are locked are the ones the carriers sell.
You can put any SIM in any unlocked phone and it will work. Sim
Locking or SP lock is something that has be done specifically prior to
sale of the phone.
keyes04@netscape.net - 18 Sep 2005 19:25 GMT
>The only phones that are locked are the ones the carriers sell.
>You can put any SIM in any unlocked phone and it will work. Sim
>Locking or SP lock is something that has be done specifically prior to
>sale of the phone.
Very interesting! One of the reasons I chose NOT to go with Cingular
was because I was bringing our unlocked phones from our former carrier
(a regional that didn't lock their phones), their people told me that
once I installed a Cingular SIM, the network would lock the phone. I
asked how they could justify that, given that I'd brought the phone TO
them - didn't buy it from them. I own it. And if I wanted to leave
Cingular, I would then have a locked phone. He said that's just
Cingular's policy to keep people from switching. End of sale!
C.R.
Mike S. - 18 Sep 2005 22:09 GMT
>>The only phones that are locked are the ones the carriers sell.
>>You can put any SIM in any unlocked phone and it will work. Sim
[quoted text clipped - 9 lines]
>Cingular, I would then have a locked phone. He said that's just
>Cingular's policy to keep people from switching. End of sale!
A Cingular SIM will prevent many phones from manually choosing another
carrier once they are camped on a Cingular tower. That may be what the CSR
meant. That does not prevent you from using a SIM from another carrier and
using THEIR network.
Michael Pronay - 19 Sep 2005 13:13 GMT
keyes04@netscape.net wrote:
> One of the reasons I chose NOT to go with Cingular was because I
> was bringing our unlocked phones from our former carrier (a
> regional that didn't lock their phones), their people told me
> that once I installed a Cingular SIM, the network would lock the
> phone.
Sorry, but that's total BS. It simply cannot be done.
M.