First, make sure there aren't any other apps open and turn off any battery-saving mode. Critical Ops can crash in the middle of a match if it doesn't have enough memory or CPU power.
Next, make sure that both the app and the OS on your device are fully up to date. Updates often leave bugs that can be fixed by reinstalling the game or clearing its files in the system settings.
If your internet isn't stable, use a strong Wi-Fi network instead of your phone's data plan. Unstable internet can cause games to crash.
For Android users, open the app menu and clear the cache for Critical Ops. Then, restart your device and router.
If the issues don't go away, remove the game and restart it from an app store that supports it, like Google Play or the Apple App Store. This will get rid of any damaged files.
If none of the above solutions work, please feel free to share your experience. You can also file a complaint on our website.
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