If you need support from Yola please contact us via firstname.lastname@example.org or make use of our live chat service! We are working on a new approach to community-based support and during this transition period we are not adding any new threads to this forum. Many thanks to everyone who has participated over the years and we look forward to unveiling a new peer-to-peer support system soon!
Sorry there is not a feature in Synthasite where you can make a mobile specific site.
If you use a thin style site with basic widgets etc. then it views fine on a mobile device.
The answer to your question is no, there is no easy way to make for example mobile.talker.com and have it point at mobile specific site.
The start on that long road is getting a domain name - when you publish your site see 'upgrade to your own domain' for more info on how to do this.