diff --git a/src/web/public/mobile.css b/src/web/public/mobile.css
index c6a41980..992d4bc2 100644
--- a/src/web/public/mobile.css
+++ b/src/web/public/mobile.css
@@ -434,11 +434,14 @@ html.mobile-init .file-browser-panel {
     height: 12px;
   }
 
-  /* Hide header settings gear and lifecycle log on mobile - settings moved to toolbar.
+  /* Hide header settings gear, lifecycle log, and away digest on mobile - settings
+     moved to toolbar; away digest is a secondary informational control that doesn't
+     belong on the cramped phone header.
      (The attachments button is opt-in / default-hidden everywhere via its own
      --hidden marker, so it needs no mobile-specific rule here.) */
   .btn-icon-header.btn-settings,
-  .btn-icon-header.btn-lifecycle-log {
+  .btn-icon-header.btn-lifecycle-log,
+  .btn-icon-header.btn-away-digest {
     display: none !important;
   }