How to allow messages on whatsapp on iPhone?

And how do I block a number on? Git an idiot that's blocked my number on his phone but occasionally phones when I do something wrong but since blocking his I want to block his number in whatsapp also. Do not want any correspondence ie his abuse to reach me in any form… Only reason I've stopped his getting battered is because he's holding the ace card that can damage my life… I do not want anything to do with him at all… Do not trust him do not like him… So how do I set about making sure he can't contact me?

If he's on your contact list on your iPhone - Go to Whatsapp - Settings - Chat settings - Blocked - Top right plus - add him to the list (To remove a blocked just delete the number on that list)

On your iPhone go to settings - Phone - Blocked

On your iPhone go to settings - Messages - Blocked

That should stop him from contacting you through Whatsapp, iPhone calls and messages.

However, if he should choose to contact you with a different number, you'll have to add those in as well.

Alternatively, if he's causing you grief and pain you can contact your telephone provider and get your number changed.

If the situation gets out of hand you should contact the authorities.