When sending test email to my partner, the background changes color in parts of the newsletter when viewed on her iPhone, while it appears solidly one color on my iPhone. I rebuilt the email rather than copying a previous one, in case there was an "invisible" layer that I couldn't remove, but the same problem persists. Can you explain what we should do? I sent a test to another person, and the test showed up correctly -- all dark blue background -- on his. What's happening on my partner's iPhone that is causing this problem? Concerned that this might also affect other people's messages.
Partner's iPhone -- note light blue background at top My iPhone -- dark blue background throughout
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