In Nokia Lumia 520 volume keys are on the right side of the mobile phone, they are used to control the volume like while listening to the music or during a phone call. Volume keys like power buttons are soldered on the motherboard and can easily be damaged if the user puts too much pressure
Nokia Lumia 510 Volume Buttons Ways Problem Solution
In Nokia Lumia 510 Volume buttons are placed on the right side of the mobile phone. They are used to control volume of the phone while listening to the music or during a phone call. Like power button volume buttons are soldered on the motherboard and can easily be damaged if someone puts too much