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carrier-locked GSM phonescarrier-locked GSM phonesPosted Aug 6, 2007 16:37 UTC (Mon) by sepreece (subscriber, #19270)In reply to: carrier-locked GSM phones by giraffedata Parent article: A turning point for open gadgets?
"Are you saying that a US carrier will allow a customer to use a phone not provided by the carrier?"
Generally speaking, yes, for GSM carriers, so long as the phone is using a SIM card that either came from the carrier or has a roaming arrangement with the carrier. If they didn't, they wouldn't be able to support those roaming arrangements. I don't know whether there is a legal requirement, but I think there is a GSM requirement (I believe the carriers all have to agree to meet GSM requirements as part of licensing the technology).
I believe they also must provide emergency calling services to any GSM handset, even if it doesn't have a SIM in it at all (as CDMA carriers must for even unactivated CDMA handsets).
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