Unable to receive messages/calls from USA for authentication on iPhone in Taiwan

I am currently in Taiwan, my I phone have some issue as below:

  1. Cannot receive any messages/calls from USA to provide me a authentication code.
  2. I cannot call any USA phone #

Please help!


Wendy ****


[Edited by Moderator]

Original Title: Need help

Posted on Oct 30, 2025 12:16 AM

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Question marked as Top-ranking reply

Posted on Oct 30, 2025 1:45 AM

if it was me then I would reach out to your original carrier about what carriers in taiwan they have a roaming agreement with and if there are steps you need to take to activate it.

if your carriers in usa don't have roaming agreements with any carriers in taiwan, then your only option is to get a sim from a taiwan carriers, unless of cause your iphone is sim locked with your usa carrier, in which case you can't

1 reply
Question marked as Top-ranking reply

Oct 30, 2025 1:45 AM in response to 369tw369

if it was me then I would reach out to your original carrier about what carriers in taiwan they have a roaming agreement with and if there are steps you need to take to activate it.

if your carriers in usa don't have roaming agreements with any carriers in taiwan, then your only option is to get a sim from a taiwan carriers, unless of cause your iphone is sim locked with your usa carrier, in which case you can't

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Unable to receive messages/calls from USA for authentication on iPhone in Taiwan

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