I want to look further into this matter for you guys. Can you all provide your exact model number, carrier & Baseband versions please?
Also, please verify if you've gone through the following steps:
Ok. Since posting my original problem I figured out something. When I purchased my s8 all apps and settings got switched over using the smart switch app. This obviously caused glitches and even was getting ADS on my home screen. I backed up my phone did a factory reset. Only installed exactly what I'm using. Now video calling feature works across the board. Doesn't need to be on WiFi. So if you're having same problem this could be why. Also don't install battery savers. Usually loaded with malware and ads that cannot be detected with usual virus and malware apps.
Hey Community! Anyone else seeing this problem and have a workaround or suggestion? Let us know!
I finally found a setting to switch that allowed me to video chat on my S8 to my daughters S7. if you go into settings, then Connections, then Mobile Networks. Turn on VoLTE Calls. That worked for me. Hope this helps.
Im from malaysia. Having this same issue only after the oreo update. Previously naugat have no problem with the video calling... Until this recent june patch update i still unable to use video calling... Like it so much cuz without wifi we can still do video call. It so cool... For samsung...