fingerprint scanner stops working

edited September 2020 in ZenFone 4 Series
ZF Model: ZE554KL
Firmware/APP Version: WW_15.0610.1901.22
Frequency of Occurrence: always with a bad signal
Rooted: No
APP Name:

When I go to the subway or I am in other places of poor reception of the cellular network, the phone vibrates spontaneously with short signals and the screen lights up. After that, the fingerprint scanner stops working. If the signal of the cellular network is stable enough, then this does not happen.
If I disable unlock on fingerprint, then this also does not happen.
So the phone does not behave correctly when fingerprint unlocking is enabled and the cellular signal is weak.
This happened on all the firmware.
I bought two phones ZE554KL, for myself and for my wife. On both phones such a bug.


  • Hi petrov.ig_1984,

    Is your phone in the pocket or in a bag when this happens?
    Could you tell me your SIM carrier?
    Could you show me a screenshot of the signal strength when this problem appears?
    (Settings > System > About phone > Status > SIM status)

    Thank you.
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