Question: what does it mean when you call someone in whatsapp and it says unavailable?
Answer: The reason why it says “UNAVAILABLE” when you try to call the person on WhatsApp is because. He/she must have blocked you on his/her phone. This happens on iPhones. When the person blocks you on his/her phone, you will not be able to call them on WhatsApp, but when you try “video call” it will work.