Volume Booster
Volume Booster is an Android application that will help you to increase the overall volume of your device. It will boost the loudspeaker volume, the headset volume and the earphone volume if you have it plugged into your device. It allows you to do so with a single tap of the button in the app. Download it from the Google Play Store.
Pros
It allows you to boost up the volume for all speakers and tones on your deviceIt also boosts volume for the earphone plugged into the phone
Cons
It is difficult to change the volume boost while during a call
Volume+
Volume+ is another Android application that will work on most devices and would help you to increase the volume more than the maximum limit on your device. It will also alter the volume of the headset, and the loudspeaker for notification and ringtone. It will not alter the volume of the earphone plugged into the device, however. Download it from the Google Play Store.
Pros
It works on most of the Android smartphones (even for Android versions earlier than Jellybean)It provides an easy to use interface to boost the volumeIt has an inbuilt equalizer that you can adjust
Cons
It does not allow you to boost the volume for your earphone plugged into the device.
Enable Noise Cancellation on your Device
A lot of Android smartphones, these days are equipped with a setting for Noise Cancellation during calls. It mainly cancels out your background noise and gives a better experience to the receiver, but on certain devices, it can also block or cancel out sounds coming from the other end. To see if your device has this feature or if it supports it, go to Settings on your phone and then Call Settings. If you see an option for Noise cancellation / reduction, enable that option and give it a try.
Samsung had introduced a feature in their Android 4.3 update on certain devices an option to boost call volume during the call. If it is available on your phone, it will be displayed on your Samsung phone like on the image above. Just click on that button and it will enable a volume boost mode for you.
Flashing your device with a new Kernel and Custom ROM
Another workaround for devices is to install a newer custom kernel for their device and then install a custom ROM on their device. You can browse through the XDA forums to find out the latest and most stable kernel for your device which will help you increase call volume to an extent. Also, installing a custom ROM will also help you at times. Though keep this in mind that this option is for more techie people and if you don’t understand the meaning of the word custom ROM or Rooting, this method is not for you.
Conclusion
The workarounds we have shared in this post will help you to increase your call volume on Android devices but do keep in mind that increasing it to the maximum possible value can damage the hardware on your device and also affect your hearing in the long run. Keeping the volume at the highest is not recommended for longer periods of time.
