How do I increase the call volume on my Samsung Galaxy S5?
Last updated: 29 April, 2014
When you are on an active call you can adjust the call volume with the dedicated volume keys on the side of your device. Touch 
to increase the volume level. If the audio quality doesn't satisfy you can touch More options 
> Settings > Noise reduction to turn off the feature.
Personalise Call Sound
Touch Phone 
> More options > Settings > Call > Personalise call sound and then choose Adapt Sound, Soft sound, Clear sound, or Off.
If you select Adapt Sound the device will guide you through customising an optimal call sound. Before starting we recommend you close all multimedia applications, move to a quiet environment and have a compatible set of earphones connected. The device will beep. Touch Yes if you hear the sound. If you cannot hear the sound touch No. Once finished touch Done to save your personalised call sound.
To turn on the personalised call sound, on an active call touch More options > Personalise call sound.
Note: please disable the Extra volume feature and disconnect any earphones prior to using the personalised call sound option. You can also access call settings from the Home screen. Touch Apps 
> Settings 
> Applications 
> Call.
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