People can now send and receive photos in Messenger at 4K resolution - or up to 4,096 x 4,096 pixels per image - the highest quality many smartphones support.

Despite their large size, Facebook promised the your 4K photos will be sent just as quickly before.

To send and share photos at 4K resolution, first update your Messenger app to make sure you have the latest version. Then open a conversation and tap the camera roll icon. Select the photo, tap send, and the person you're messaging with will receive the high resolution photo.

Starting today, Facebook is rolling out 4K resolution on both iPhone and Android to people in the US, Canada, France, Australia, the UK, Singapore, Hong Kong, Japan, and South Korea. In the coming weeks, the company is planning to roll out 4k resolution to additional countries.