[oarsinsync]

WhatsApp iPhone syncs to iCloud unencrypted by default[1].

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.

[throwaway290]

> WhatsApp iPhone syncs to iCloud unencrypted by default[1].

Not true. You must choose to enable it or not when you set up new phone. On mine it does not back up

[monooso]

If you must "choose to enable" encryption, that implies it's off by default. If so, GP's statement is accurate.

[throwaway290]

No, I mean you must select yes or no. can't use WhatsApp until you make a choice yourself.

[simsla]

Choose to enable backups.