messages
I will be travelling overseas without mobile data. International SMS will be set up, but I have iMessage linked to this mobile number. I have other iPhones, iPads and Macs which also receive iMessages on this account.
Do I have to disable iMessage on all my devices before I travel to ensure when people send a message to my mobile number, I will receive it as an International SMS?
Thanks in advance.
If you go into Settings > Messages, you should be able to choose which email addresses you get iMessages to. It's under the Receive At option which let's you input additional email addresses.
Additionally, you can even sign out of your iMessage account without affecting the iTunes account by tapping on the name of the account you are currently signed in as (on the same screen).
Here's what it looks like on an iPhone:
I'd try to Reset Network Settings, as detailed here: Not receiving Text Messages after upgrade to iOS 7 -- this seems to cure a wide range of ills for Messages.
Best Answer
Simple answer, yes.
If you want SMS to arrive at your phone there must be no other device left active that can possibly pick up the iMessage.
Otherwise Apple considers that if any device received the iMessage, it is considered delivered & will not try again as SMS.
Related question - How to tell Messages "I'm not at home"? which remains unanswered, despite the great efforts of one member; but shows promise for Yosemite, if not Mavericks.