How do I increase the audio level on the Noise Explorer 2smartwatch?

During calls, the volume control appears on the Noise Explorer 2smartwatch's screen. Adjust the volume using this control as per your preference.

Why are incoming calls getting rejected?

Noise Explorer 2smartwatch can reject an incoming call if the caller's number is not added to the contact list. Ensure that the numbers allowed to contact the child are added into the contact list. You can also enable callers to contact your child, who are not in the app's contact list and from unknown numbers, from the app.

How do I change the notification setting from vibrate to ringtone mode?
 On your Noise Explorer 2smartwatch, swipe down from the home screen and set the ring volume as per your preference.

How do I add contacts on my Noise Explorer 2smartwatch?

In order to add contacts on the Noise Explorer 2smartwatch, make sure that your Noise Explorer app is paired. On your Noise Explorer app, go to device settings, select add contacts, tap the '+' icon, and enter the relationship and number.