HiHello is available on iOS, Android, and the web. If you want to log in to your account on a different device, the most important thing is to make sure you use the same login method across all your devices. (For example, if you create an account with Gmail, make sure you sign in with Gmail on your other devices.) If you created your account on the web and want to sign in on your mobile device, follow these steps for a seamless experience.