Maybe that is less an android and more an operator policy question, but posting here because it may very well be a bug in Hangouts, the most embarrassing app google ever published.
I have a tmobile SIM from the US. I travelled abroad and i could send free SMS to that country (by sending to plain
<phone number> or
+<country code><phone number>) and free SMS to the US (by sending to
Now back in the US, i can't send international SMS at all. My default app is Hangouts. Using either my google voice account or the lame-excuse-for-a-UI-SMS-account in hangouts, when i try to send a message to
+<country code><phone number> i get a message right after with the text:
Sorry, this service is not available.
now via SMS
What is the correct way to send international SMS in the US?