The latest WhatsApp beta for Android, version 2.24.18.14, introduces an interesting new feature: contact sync management. This works with the upcoming ability to use multiple WhatsApp accounts on the same phone.
This will allow you to have separate contacts for each account. You will be able to choose which contacts to sync with your phone and manage WhatsApp contacts from your linked devices. So, if you want, you can turn off syncing with your phone from your secondary WhatsApp account.
Interestingly, even if you turn off contact syncing for an account, you'll still be able to manually sync each contact with an upcoming beta. Manually syncing a contact will make it available on all linked devices. There will also be a new contact backup option, which will allow you to restore your contacts if you reinstall the app.
As always with WhatsApp features under development, expect it to be at least a few months before this is made available to everyone.
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