diff --git a/research/smartphone.md b/research/smartphone.md
index 860889043065beb31df7624fb625be772e403f58..c5404cf5a9de0724247f64e4bd746675fa07de12 100644
--- a/research/smartphone.md
+++ b/research/smartphone.md
@@ -59,7 +59,7 @@ Iterador básico para a manutenção do smartphone:
 * Apps:
     * VPN.
     * Editor.
-    * LibreSignal.
+    * [Signal APK](https://signal.org/android/apk/).
     * Barcode Scanner.
     * [Scuttloid](https://f-droid.org/packages/gr.ndre.scuttloid/).
     * [MPDroid](https://f-droid.org/packages/com.namelessdev.mpdroid/).