Messages bouncing back and forth blue to green

For some, not all, contacts in Messages – who I know for certain are on iPhones – when I send a message from macOS the message is first blue, then green, then blue, and the sticks to green. No big deal in the sense that the messages always go through, but I’m curious why this happens.

Any clues.

Katie

Seen something similar happen when the recipeint logs out of iCloud on their phone.

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I’ve seen green bubbles for those I know are on iPhones when I’m in an area with poor data coverage, the same if the recipient is in an area with poor data coverage.

I’ve also seen weird behaviour when someone has switched from iPhone to Android, but that tends to be a 1 time thing.

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