Practice Test Geeks(CMT) Certified Mobile Tech Practice Test
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Device Hardware & Software Flashcards

7 cards from real CMT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Device Hardware & Software flashcards as text

  1. Which wireless standard allows a mobile device to make contactless payments at a point-of-sale terminal?

    Answer: NFC (Near Field Communication)

    NFC operates at 13.56 MHz over distances under 4 cm and is the standard used by Apple Pay, Google Pay, and other mobile payment systems.

  2. What is the function of a mobile device's baseboard processor (baseband chip)?

    Answer: Manages all cellular radio communications

    The baseband processor manages cellular modem functions including LTE/5G communication, call processing, and SMS independently of the main CPU.

  3. A customer's phone shows 'SIM Not Provisioned MM#2' error. What does this typically indicate?

    Answer: The SIM card has not been activated by the carrier

    'MM#2' means the SIM is recognized by the device but has not been activated or provisioned by the carrier.

  4. Which display technology uses organic compounds to emit light per pixel, resulting in true blacks and no backlight?

    Answer: OLED/AMOLED

    OLED/AMOLED pixels emit their own light and can turn off individually, producing true black levels impossible on LCD backlights.

  5. After a software update, a device's Wi-Fi drops connections repeatedly. The technician confirms hardware is fine. What is the best first step?

    Answer: Reset network settings and re-test

    Resetting network settings clears corrupted Wi-Fi profiles and misconfigured parameters introduced by the update without data loss.

  6. What is the role of the PMU (Power Management Unit) in a mobile device?

    Answer: Regulates and distributes voltage to all device components

    The PMU converts and regulates battery voltage into the precise power levels required by the CPU, display, radios, and other components.

  7. A technician is replacing the battery on a modern iPhone that uses 'True Tone.' What must be done to restore True Tone functionality after the repair?

    Answer: Re-pair the display using Apple's System Configuration tool

    True Tone data is stored in the display module's EEPROM and must be re-paired to the logic board using Apple's proprietary System Configuration tool or third-party equivalents.