Hmm, that is strange...
"So, Messaging refuses to work because of this formatting" -> do you mean the default android text message app? "Messaging"?
Using Messaging I am able to send an SMS to a +XX XX XXXX XXXX number...
Do you have this same issue on another android phone?
Maybe as a test, change the number of just that one individual, to - for example, remove the spaces or something, and then test a group txt again, and see if that makes a difference?
Also, make sure the number is set as "mobile" against that contact, and that you don't have any off unicode or some funny characters in that number.
I dunno if Google would have such a defect in their own app... Google built the libphonenumber library which can basically figure out any phone number in an any country (I have used this myself):
https://github.com/googlei18n/libphonenumberAnd they use their own lib in their own app:
https://android.googlesource.com/platform/p...mberHelper.javaWere you sending as SMS or MMS? If you type a too long message, Messaging will automatically convert it to an MMS... For your troublesome recipient to receive an MMS, their APN on their phone needs to be set up for this...
Perhaps your group test was an MMS, but your second, direct test was SMS?