Twitter announced on April 22 (local time) that it will be possible to upload 4K images on Android and iOS versions of the app. This feature allows you to display higher resolution images than before.
This feature has been testing for some users since March, but is now available to all users. However, to use this function, you need to set it in advance. From within the Twitter app, select Data Usage Settings under Settings and Privacy. You need to enable the display for uploading images in high definition. At this time, you can choose between two types of Wi-Fi connection, mobile data communication and Wi-Fi connection.
However, in order to view images uploaded in this setting in the highest quality, not only upload but also load settings must be enabled. Of course, if you see it on a PC, you don’t need this setting.