WhatsApp for Android is testing a threaded replies feature to improve group chat organisation, according to a feature tracker. The tool opens a separate window showing all replies to a single message. Currently limited to select beta testers, the feature may expand soon. Notably, the threaded icon appears only when a message gets multiple replies.WhatsApp for Android is testing a threaded replies feature to improve group chat organisation, according to a feature tracker. The tool opens a separate window showing all replies to a single message. Currently limited to select beta testers, the feature may expand soon. Notably, the threaded icon appears only when a message gets multiple replies.