1. Windows Central Question's Avatar
    I have 2 Lumias - 640 &735. Both run W8.1 and suffer the same problem. I lose sounds, the most important being incoming call alert. I know they have disabled as the keyboard key clicking disappears.
    The way to remedy this is a hard boot but this is becoming tiresome and I'm missing calls when I'm not aware.
    Why is this happening and what is the cure, please. Many thanks if you can help.
    11-24-2016 11:35 AM
  2. abhishek singh21's Avatar
    have you tried a soft reset? you could do that by holding together volume down+power key until phone reboots.

    Also i would insist that you upgrade both your devices to windows 10 mobile using the upgrade advisor app.

    If you need additional help or want to reply to this thread , learn how to join windows central.
    11-24-2016 10:33 PM

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