Absolutely! Both hosts and guests of a StreamYard studio can join the stream using a mobile device such as a tablet or phone.
For Android, we recommend using the Chrome browser application.
For iOS, we recommend using the StreamYard iOS Guest App if you are joining as a guest. Otherwise, you will need to join the studio using the Safari browser.
However for the best possible experience, we do recommend that you and your guests both use a laptop/desktop. For more information on the requirements for both iOS and Android to make sure your phone will work, you can check our requirements page here!