WhatsApp is the world's most popular messaging app, with over 600 million active users. One of the most common annoyances with the app is that it automatically downloads media files (photos and audio) by default. WhatsApp says this is optimised for best performance, but when friends decide to send a dozen pictures of their dinner to everyone they know, it is optimised for maximum annoyance instead. Here's how you can stop WhatsApp from automatically saving photos and audio on your phone.

By default, WhatsApp will automatically download images over your cellular connection to provide you with quick access to your latest photos.

Follow to below steps to choose auto download enable or disabled -

• In Android

1.  OpenWhatsApp and tap on menu option and Select Settings.
2.    2.   Now select Chat settings on setting screen and choose Media auto-download.then select When using cellular data. 

1. You'll see three options: When using cellular data, When connected on Wi-Fi and When roaming. Tap each one and disable auto-downloads by unchecking all three options - Images, Audio and Video.

• In IPhone

   WhatsApp for iPhone has an easy way to stop automatically saving photos to the Camera Roll. Here's what you can do:

1.   Open WhatsApp and tap the Settings button at the bottom-right.
2.   Go to Chat settings > Save incoming media > Off.

This stops the pictures people are sending from showing up in the camera roll, and taking over your synced Photo Stream. Unfortunately, there's no way to stop WhatsApp from auto-downloading photos on your iPhone. It will ask you whether you want to download videos, but photos are saved automatically.