Is your loudspeaker not loud enough? Even when you put it in max volume, you still see miss calls on your phone because you didn't hear your phone ring.
In this post,you will get to know how you can increase your loudspeaker to make it sound loud when playing music or ringing.
Also read
How to root your phone
Update: you can increase the volume of your mediatek device without rooting it, apart from the mobile uncle tool, MTK engineering tool is another app, you can also use to increase the volume of your phone.
Follow same procedure below to increase volume with MTK engineering tool.
It will ask for permission to run, then you grant.