Samsung Galaxy Core Prime

I can't make video calls - Samsung Galaxy Core Prime

Cause 2 of 3: The other phone doesn't support 3G or isn't connected to a 3G network

To make a video call, both phones need to support 3G and be connected to a 3G network.

Solution: Make a voice call and ask the recipient if the other phone supports 3G and if it's connected to a 3G network.