First of all, we recommend playing the game on the team member's phone with the longest battery life. This is often the most recent phone. If your battery runs out during the game, you can continue playing on another phone. In that case, go through the following steps: - Leave the game on the phone about to go out. - Log in to the new phone with your personal login details. - Close the game info window. - Press start. - Do not re-enter your team name and team members, but press 'or resume with existing team'. - Continue the City Game on the new phone. Note: the time you spend switching to a new phone is added to your playing time! So the time you see in the app after switching is no longer correct. However, this has no further impact on the game.