WHATSAPP is one of the world's most popular apps with more than 2billion users.
So it's really no surprise that WhatsApp developers have packed all sorts of special features in.
Take your WhatsApp app to the next levelCredit: AlamySome are more obvious than others.
Here are six hidden features you may not have known about.
See who you talk to most on WhatsApp
Want to know who you waste time chatting away with most?
Putin accused of surrounding himself with same 'actors' at series of eventsThis isn't a 100 per cent method, more of an indicator.
You can check how much data is used per chat in WhatsApp - and therefore use that to suggest who you're probably talking to most.
On an iPhone or Android device, go to Settings, followed by Storage and Data, then Manage Storage.
At the bottom, you'll find a list of contacts in order of which is using most storage, which gives you your answer.
Stop WhatsApp photos and videos from appearing in your phone's gallery
Chances are you receive a load of photos and videos on WhatsApp - which can clog up your Photos app.
Fortunately, you can stop any pictures or videos you are sent from appearing in it
Go to Settings, then Chats.
You'll see Save to Camera Roll on iOS or Show Media in Gallery on Android - which ever you use, switch it off.
Delete all media from one WhatsApp chat
If you desperately need to free up some space and know someone who sends loads of GIFs, videos and more, you can quickly clear media they've sent.
From iOS or Android, head to Settings, then Storage and Data.
Edinburgh Hogmanay revellers stuck in queues for TWO HOURS in torrential rainNext, go to Manage Storage and select the contact's name.
Tap Select and tick what you want to delete, followed by the bin icon.
Save your data
All those videos and photos can quickly burn through data - which could in turn cost you more by having to by even more data.
Thankfully there's a special option that only allows hefty media files to be downloaded onto your device when you're on Wi-Fi.
To set it up, go to Settings, followed by Storage and Data.
Below you'll see a list of each media type.
Tap each one and set it to Wi-Fi.
FaceID to unlock WhatsApp
You can keep your WhatsApp extra secure by adding Face ID - or Touch ID - to access the app.
In Settings, then Privacy.
Select Screen Lock and turn on Require Face ID.
You can even set a time duration.
Don't forget, you can also lock individual chats as well.
Add a wallpaper to a specific chat on WhatsApp
If you have a special memory with that special person, you can customise the wallpaper on their WhatsApp chat.
To begin, you have to tap on your contact's profile.
On iOS, find Wallpaper & Sound then Choose a New Wallpaper.
On Android, it's Wallpaper, followed by Change.
WhatsApp is owned by Facebook parent MetaCredit: AlamyWe pay for your stories! Do you have a story for The Sun Online Tech & Science team? Email us at tech@the-sun.co.uk