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    ID #1658

    I have just bought a RS-MMC but it doesn't work in my Nokia 6630?

    When memory cards are used in mobile devices such as mobile phones they draw power, which affects battery life. Generally, the lower the voltage of a memory card, the less current it will draw to operate leading to a longer battery life. This is becoming more important with 3G/2.5G Camera Phones and Smart Phones.

    Currently, MMC (MultiMediaCard) and RS-MMC (Reduced Sized MultiMediaCard) are 3.3 V (Range: 2.7V to 3.6V). They are also both 7-pin.

    There are new DV (Dual Voltage) versions, DV-MMC and DV-RSMMC (both 7-pin) these operate at 3.3V (Range: 2.7V to 3.6V) and 1.8V (1.7V to 1.95V). The cards are designed to work in current devices and new dual voltage and single voltage devices.

    Some new devices will only operate at 1.8V. Therefore they require the DV version of the card.

    The Nokia 6630 is one of the first devices that will require DV-RSMMC - current non DV-RSMMC cards will not work. Other mobile phones that require DV-RSMMC are the Nokia 6680, Nokia 6681 and Nokia 6682.

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    Last update: 2010-09-17 19:13
    Revision: 1.0

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