In order to send WhatsApp messages, the user must save the number first. But if it is done continuously, there will be many contacts that will eventually be unused.
Like the case, I’ve experienced for example. When you are going to transact buying and selling online, I have to save the seller’s number before contacting him to ask about the condition of the item more fully through the WhatsApp application.
But after the transaction is completed, the payment has been successfully made and the item is in hand, the seller’s WhatsApp number will no longer be used. With a note, there are no agreements such as guarantees or other cooperation.
As a solution, the users of Facebook-made messaging applications must diligently delete unused contacts manually. Until now, there is no automatic contact delete feature in the application.
In some instances, deleting WhatsApp contacts from the device can be easily done. Which in this case, the user only needs to enter the contact application they have, then delete the contact as usual.