05-14-2010, 02:35 PM
Kindle: Snow Crash
Join Date: Jan 2005
Location: Denville, NJ.
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For a CDMA phone to work in a GSM area, it has to be a "world phone" model. Those are CDMA devices with a SIM card, designed to roam onto European GSM networks when out of the U.S. or Canada (the two primary CDMA markets).
For the GSM portion to work on another carrier's SIM the GSM portion must be unlocked.
As for the "bad ESN" thing, that means the original carrier has blacklisted the device and it will not work. The only place to use it is on a carrier like MetroPCS or Cricket, and then only after flashing it to their own firmware. The Tier 1 carriers like Verizon, Sprint, etc, refuse to activate a handset on their network that was not originally sold by them. Even if Both Sprint and Verizon sell the identical device, if that particular one doesn't have Sprint's branding on it Sprint won't activate it. Both Sprint and Verizon sell the BB 9630, but you'll never see a Verizon one working on Sprint.
Last edited by rambo47 : 05-14-2010 at 02:36 PM.