Open WhatsApp
Tap the chat or contact you want to check
Open the contact info or profile
View the phone number listed there
Check your phone’s contacts app for the saved WhatsApp number
Ask the person to share their number directly
Use a shared group to view the person’s profile and number if visible
Check your call log or message history for the number
Search your phone contacts by name if the number is saved
Use WhatsApp Web or Desktop and open the contact details to see the number