| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | "Application error" on launch | Wrong resolution or corrupted file | Delete the .jar and find a fresh version. | | Game starts but screen is cut off | You installed a 176x208 version | Uninstall and find the QVGA version. | | "Out of memory" error | Too many apps running in background | Restart the phone. Clear cache: Menu > Settings > App manager > Running apps. | | Keys don't respond | Nokia 2700 has a different keypad layout | Diamond Rush uses 2 (up), 8 (down), 4 (left), 6 (right), 5 (action) . Those work fine. | | Game lags during boulder falls | Normal for S40 hardware | Accept it; that's part of the retro charm. | | Music stutters | Low RAM | Disable game audio: In-game options > Sound > Off. |

: If the game feels sluggish, ensure you don't have too many other applications running in the background, though S40 is generally excellent at dedicated Java performance.

Frozen caves with falling stalactites, ice traps, and the Ice Diamond. Core Gameplay Mechanics

The Nokia 2700 classic has a , and Diamond Rush is optimized well for it.