iMessage also syncs to iCloud unencrypted by default[2].
[1] Depends on you paying for iCloud storage, so that you have space for a full phone backup to occur.
[2] Might be "free" with "iMessage in iCloud", an option to enable separately.
Not true. You must choose to enable it or not when you set up new phone. On mine it does not back up
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iMessage also syncs to iCloud unencrypted by default[2].
[1] Depends on you paying for iCloud storage, so that you have space for a full phone backup to occur.
[2] Might be "free" with "iMessage in iCloud", an option to enable separately.