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Thread: AT&T International Caribbean Add-on - settings help?
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Old Jan 14, 2019 | 9:40 am
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Need
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Join Date: Jan 2003
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I could be wrong, but I think the AT&T $15 add-on is for calling from the US to the Caribbean. I think the only countries you could roam on AT&T prepaid are Canada and Mexico. You should call and check.

BTW, I have Google Fi and Tmobile/Sprint does not have signal in my building also, but US Cellular has super strong signal. And I was able to use an app, FiSwitch, to force Fi to use US Cellular.
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