Samsung T100 low sound during call, low ringtones sound!! Speaker Problem!
 

First of all hello to all of you, this is my first post on this forum as I'm a new member. I don't know much about cell phones but I'm a computer geek. :D
I found this forum of great information, so I thought worth posting here that would solve my problem

I'd bought a Samsung T100, which has two problems, battery was not working problem taking longer charging duration, I got fix this problem in a mobile repair shop but there is also another problem.
Speaker of the phone I think is not working properly, ringtones sound is too leval and while making a call, the sound is also too low, even listening it is a problem for me. Another thing I noticed is this that as the call continues sound gets lower and lower.
While playing ringtones, there is a small noise, a humming sound also from speaker which can be listen if I bring it closer to my ears.
Hope that you all will be helpful and also will take care that I'm a newbie in cell phones :p so post in a simple way and explain the technical terms.

D problem come from d speaker or maybe d speaker ic, diode as be remove or bad contact resuld if check, try 2 change d speaker, 4 d ringer and ear piece are same, if u can change dis tru 2 u take 2 a repair shop den complain dis,