For Galaxy S4 users if you feel that your phone volume is not loud enough, there is a way to boost volume by modifying 'default_gain.conf', but this is for rooted devices only.
To do you need to download an app from Google Play name 'Root Browser'. After you download, open it and follow the steps below.
Step 1: If the app ask you to download some utilities -> Click Yes
Step 2: Browse to system/etc and find a file name default_gain.conf
Step 3: Long press on it (default_gain.conf) and choose Open with...
Step 4: Choose RB Text Editor
To increase speaker volume find these lines:
Modifier "Normal" {
SupportedDevice {
"Speaker"
}
Enable {
{ "Speaker Digital Volume", 112 },
{ "SPKOUTL Input 1 Volume", 32 },
{ "SPKOUTL Input 2 Volume", 32 },
}
}
To increase headphone volume find these lines:
Modifier "Normal" {
SupportedDevice {
"Headphone"
}
Enable {
{ "Noise Gate Switch", 0 },
{ "HPOUT1 Digital Volume", 112 },
{ "HPOUT1L Input 1 Volume", 32 },
{ "HPOUT1R Input 1 Volume", 32 },
}
}
To increase ringtone volume find these lines:
Modifier "Ringtone" {
SupportedDevice {
"Speaker"
}
Enable {
{ "Speaker Digital Volume", 112 },
{ "SPKOUTL Input 1 Volume", 32 },
{ "SPKOUTL Input 2 Volume", 32 },
}
}
The volume you should adjust is between 112 and 132
After you saved it supersu will ask you to give permission. Accept it!
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My default_gain.conf values:
Speaker: 116
Ringtone: 116
Headphone: 132 :D
