Feeding in phone number while registering for WhatsApp is a mandatory process but not everyone especially the privacy lovers may not like this idea very much. WhatsApp requires your phone number to start the service and this contact number can be seen by anyone added in our contact list.
Unfortunately, there is no way to hide your phone number on WhatsApp. The app requires your valid phone number to let you login into the service. But that doesnt mean you cant hide your current number from your contacts. There is a trick you can use to hide your current phone number on WhatsApp.
To hide your current phone number, the first thing you need to have is an alternate phone number. WhatsApp also has a feature using which you can inform all your contacts about your new phone number in case you have changed it on WhatsApp but this feature is helpful if you want to let everyone know your phone number. The trick we are talking about here helps you hide your phone number from your contacts.