By default, the application is updated from Google Play as soon as new version released.

 

MyChat Administrator must update the server to the latest version regularly. If he does not do it, you can face the issue if smartphone application was updated from the Market and MyChat Server is outdated. You may get such errors as #0079 or #0081 during connection attempts.

 

However, if you can't update the server for some reason, you can block auto updates for MyChat Messenger in Google Play in your phone:

 

Disable auto update for MyChat Messenger