Hi! Thanks! Yes, you can play it with your phone.
First, you need to download the Hive Keychain extension on your browser in order to sign up & log in. Once you have done this you can log in into the game. If you have a computer I recommend you to download the Hive Keychain there and log in from your computer. Then, you can scan a QR code from your account to play from your phone. That's what I did but if you don't have a computer you should be able to do it all the steps from your phone. If you have more issues please let me know and I will try to help you.
I leave here the official links.
My referral link (if you sign up from this link you can help me a little bit): https://www.risingstargame.com?referrer=specialfeelings
Link: https://www.risingstargame.com/