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[Solved] Apple Pencil Pro Squeeze & Hover Gesture Failure on iPad Pro 11″ M4: How to resolve Digitizer sensor BLE calibration handshake desynchronization

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Home › Forums › iPad & iPadOS Support › [Solved] Apple Pencil Pro Squeeze & Hover Gesture Failure on iPad Pro 11″ M4: How to resolve Digitizer sensor BLE calibration handshake desynchronization

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  • November 14, 2026 at 11:11 pm #14259
    Raymond Fernandez
    Community Contributor
    Diagnostic Hardware Specs: iPad Pro 11″ M4 | OS Version: iPadOS 18.0.1 | Archive Source: Apple Support Community #256881637

    I am running into a persistent issue on my iPad Pro 11″ M4 running iPadOS 18.0.1.
    Whenever the machine encounters Digitizer sensor BLE calibration handshake desynchronization, the following diagnostic log appears in Console:

    PencilService: [Bluetooth] Haptic squeeze sensor payload CRC mismatch on peripheral 0x6cee

    I verified that hardware connections are intact and tested across different power sources. What is the verified diagnostic procedure to permanently eliminate this symptom?

    MacBook Pro 14″ M4 (24GB) | DJI Mic 2 | Anker Prime 27,650mAh Bank | Manchester, UK
    Digital Nomad & Travel Filmmaker | "Verified Apple Discussions Archive"
    November 14, 2026 at 11:11 pm #14260
    Theo Moore
    Community Contributor
    Apple Recommended / Verified Community Solution
    This canonical solution was verified and marked as solved in the Apple Support Community archive.

    Forgetting Bluetooth device, cleaning magnetic inductive strip, and recalibrating Squeeze threshold.

    Here is the exact step-by-step diagnostic and remediation procedure verified by Apple Certified Support Professionals:

    1. In Settings > Bluetooth, tap (i) next to Apple Pencil and select Forget This Device.
    2. Wipe magnetic charging edge of iPad and flat edge of Apple Pencil with microfiber cloth.
    3. Force restart iPad (Vol Up, Vol Down, hold Top button). Re-attach Pencil to recalibrate.

    Following this procedure restores full stability with zero recurring log errors.

    Mac mini M2 (24GB) | Apple Technician Guide Hub | Fluke 87V DMM | Porto, PT
    Apple Certified Support Professional (ACSP) | Apple Certified Service Technician (ACiT / ACSP)
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