You were talking with a friend for an hour, and even though someone else was trying to reach you as well, you didn’t hear any sound or notification indicating there is another call waiting? Well, you are not the only one. It seems pretty common in Samsung phones since the call waiting feature is disabled by default. Here is a way how to fix it.
Activate call waiting in Samsung
1. Go to your Phone app and tap on the three dots in the top right corner.
2. Select Settings from the menu.
3. Scroll down to Supplementary Services and enter it (in older Andoird version, it can be called just More settings).
Enable the Call waiting option by clicking on the on/off button.
That’s it. Not the call waiting option is enabled, and you should hear other people calling you even when you are already on a call.