Gameloft games sometimes conflict with one another if one has a modified license verification. If you have other modded Gameloft games (like Modern Combat 3 N.O.V.A. 3 ) installed, try uninstalling them Restart your device and try launching MC4 again. 5. File Integrity (Steam Version)
: Go to the Play Store and search for Modern Combat 4. If you have previously purchased it, tap Install . If you haven't, this method may require you to have the APK already installed.
: Modern Combat 4 does not need a constant connection for its single-player campaign. Turn on Airplane Mode before booting up the game to stop it from pinging dead validation servers.