I have to change my mobile phone now how I can save the game I played and how can I continue the game..

Use the option to Bind your game, if you haven't already. Go to the settings menu and select the account option - > Bind Account. Create an IM30 account with your email address and bind the game to that account.

On any other device you can then start a new game (you need to go through the initial intro) then once you can access the menus go to the account option and select the 'Switch Account' option. Log in with the IM30 account details and your previous game will be loaded.