I've had this 520 for about 3 years and it has recently been showing some problems. Two of which are, whenever I turn off/on the phone, it makes no noise indicating that it has turned off. (I checked the settings, it's on). And whenever I plug in the charger, it will charge, but it will not make a noise indicating that it has been plugged in. I restarted it, didn't work, I turned my volume to max, it didn't work. It is running Lumia Cyan. (8.1)
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