Samsung S5 Mobile phone calls small voice? Samsung S5 call voice small how to solve?

Method One

If the sound is small, we press the volume button on the phone to adjust, the side of the volume adjustment key

Method Two

If the phone is not directly useless we can try to use the headset to call the sound is not equally small.

Method Three

Organic friends said that the purchase of the port version is also a small voice only to change the mobile phone, this is a hardware problem to change the country line on it.

Method Four

It may also be a system problem we can try to put the mobile phone system into the android5.0 system OH.