Since each partner has a unique website address and login credentials, switching brokers on mobile requires you to log out and log in again to switch accounts.
While we're working on making the switch between partners easier, the current process is simple:
Tap the Menu icon at the bottom left of your screen.
Then, select Settings.
Log out.
Click back from the login menu.
Click back again.
Then you will get to the lobby, where you can select a broker.
Once you choose a broker, you'll be taken to the login screen.
Ensure that you enter the correct credentials for the selected broker.