Also to know is, does WhatsApp share all your contacts?
WhatsApp allows you to share photo, video, GIF, and text updates that disappear after 24 hours. These can be seen by mutual contacts—that is, people whose numbers you have saved in your address book and who have their numbers saved in yours. You can share these with all your contacts or only specific ones you select.
One may also ask, can WhatsApp friends see your contacts? No.They won't see contacts or be able to access old chats – that data is saved on your phone – but they can receive messages sent to your old number (without knowing who sent them). WhatsApp gets its contacts from your phone book, so it's unlikely that the person taking your old number will have the same contact.
In this regard, can you use WhatsApp without sharing contacts?
Yes, you can use WhatsApp without giving access to it. You can apply this while you set up your account. When you want to contact someone, you can just manually input their number to your WhatsApp.
How do I know if someone is checking me secretly on WhatsApp?
If it is of double blue tick, then that means that person is not watching your status privately but if that person has replied to you and your sent message is not of the double blue tick but only double grey tick then that person is the one who is watching your status privately or secretly.