Originally Posted by
gfunkdave
If there's a non-Verizon SIM in the phone it will roam onto whatever the SIM says. I can put my China Mobile SIM in and it roams onto AT&T here in New York.
I guess a better phrasing of the question would be, will the iPhone accept a Straight Talk SIM given that Verizon doesn't unlock it for the USA - how does the Straight Talk SIM appear to the phone?
The Straight Talk plan includes voice, data and text. While data is unlimited, if you exceed 2GB per month and they can trace your activity to downloads or streaming, they reserve the right to terminate the account.
You can choose either a TMO or ATT compatible SIM card - so the Verizon iPhone would work on the ATT GSM network with an ATT compatible SIM. However, the Verizon and Sprint iPhones have a block on them that prevents a US-based GSM SIM from working, restricting the phones to foreign SIMs only - therefore unless someone unlocks the phone or gets Verizon/Sprint to remove the domestic SIM block, it won't work at all.
All other iPhones will work with the ATT SIM - although a TMO SIM *could* be used, but the phone will receive Edge/2G service only, which defeats the purpose.