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Holy haberdashery, Batman! The iPhone 4's vibrator received a complete makeover.

Rather than using a rotational electric motor with a counterweight, the Verizon iPhone appears to utilize a linear oscillating vibrator for call/message alerts. Based on the patent information around this technology, we think this may be a Samsung part.

Our tests show that the new vibrator has quieter, softer feel, and makes a better sound when on a table.

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