If you delete a phone number from your contacts, will it be reflected in WhatsApp - briefly?
If you delete a phone number from your contacts, the change will not be automatically reflected in WhatsApp. To ensure that the contact is updated in WhatsApp, you may need to manually refresh or re-sync your contact list within the app.
If you delete a phone number from your contacts, will it be reflected in WhatsApp - in detail?
When you delete a phone number from your device's contact list, the impact on WhatsApp depends on several factors.
Firstly, if the contact was already saved within WhatsApp before deletion, it will remain in your WhatsApp contacts even after removal from your device's general contact list. This is because WhatsApp maintains its own separate database of contacts that are specifically used for messaging purposes. Therefore, simply deleting a number from your device's contact list does not automatically delete the same contact from WhatsApp.
However, if the contact was never saved in WhatsApp to begin with and you only had it stored in your device's general contacts, then deleting that phone number will indeed affect your ability to message that person through WhatsApp. Since WhatsApp relies on having the contact saved within its own system, removing the number from your device's contacts means WhatsApp will no longer recognize or display that contact for messaging purposes.
In summary, deleting a phone number from your device’s general contacts does not automatically reflect in WhatsApp if the contact was already saved in the app. However, if the contact was never added to WhatsApp's database, removing it from your device's contacts will prevent you from messaging that person through the app until you add them back either into your device's contacts or directly within WhatsApp.