As I understand it, video-calling is proprietary on smartphones - for example, a Samsung Galaxy Whatever that can do video-calling will only be able to do so to other Samsung smartphones, and not just any smartphone...
"Feature phones", as they are now called, offered video-calling based on industry standards, but smartphones have taken a different path, with both manufacturers and software developers offering their own solutions that are rarely compatible.
Not to mention the fact that "traditional" video-calling has largely been surpassed by services like Google Hangouts, Apple's video-calling thing, Skype, etc... Of course, Ubuntu (Touch) doesn't support any of these services, either, so it's a bit of a tricky issue.
As I understand it, video-calling is proprietary on smartphones - for example, a Samsung Galaxy Whatever that can do video-calling will only be able to do so to other Samsung smartphones, and not just any smartphone...
"Feature phones", as they are now called, offered video-calling based on industry standards, but smartphones have taken a different path, with both manufacturers and software developers offering their own solutions that are rarely compatible.
Not to mention the fact that "traditional" video-calling has largely been surpassed by services like Google Hangouts, Apple's video-calling thing, Skype, etc... Of course, Ubuntu (Touch) doesn't support any of these services, either, so it's a bit of a tricky issue.