Nokia 3310 Simulator -

This is the most popular Google result. It features a fully interactive 3D model of the phone you can rotate. When you "unlock" the keypad (press left, then *), the screen lights up. It includes Snake II, a fake SMS messenger, and a fake calling screen. The attention to detail is incredible—the startup screen lasts exactly as long as the original.

Known limitations: audio hardware differences, nonexistent radio stack in high-level simulation, and micro-timing differences without ROM-level emulation.

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