Twitter for Android and iOS will now allow users to upload and view 4K images on the microblogging platform. The resolution for the images on Twitter’s mobile apps was previously limited to 2,048x2,048 pixels.

source https://gadgets.ndtv.com/apps/news/twitter-android-ios-mobile-app-upload-view-share-4k-pictures-feature-update-2420807#rss-gadgets-all