DeeDee has a Samsung Galaxy S3 and has been having issues with apps crashing. Leo says that the Samsung TouchWiz interface could be causing the issue. Phones with a pure version of Android like the OnePlus Two and the Google Nexus never have the issue. So the interface is just taking up too much RAM as it's running on top of Android. Android also needs more memory. Leo advises doing a complete reset and avoid modern games because they expect a more powerful processor to run. The S3 is a few years old now. DeeDee can also try rooting it.