1 files changed, 5 insertions, 1 deletions
diff --git a/Notes.md b/Notes.md
index c5df56a8b..b99beab23 100644
--- a/Notes.md
+++ b/Notes.md
@@ -14,4 +14,8 @@ https://stackoverflow.com/questions/33588459/what-is-android-multidex
 
 ### What does " tools:ignore="GoogleAppIndexingWarning"" mean?
 
-### What does "tools:replace="android:label, android:allowBackup"" mean?
-\ No newline at end of file
+### What does "tools:replace="android:label, android:allowBackup"" mean?
+
+### Obtaining Phone Number
+Scheint nicht garantiert zu sein. Ggf. Device ID doch besser -> Use Case des Wechsels ggf. haeufiger notwendig
+https://stackoverflow.com/questions/2480288/programmatically-obtain-the-phone-number-of-the-android-phone
+\ No newline at end of file