thanks. By the way: the speaker on the back is supposed to be not so loud?, I mean, my brother's nokia 6265 sounds louder and it's not a cell focused in music.
Also, you may want to change the setting to make the speaker louder - like switching your phone to IN CAR mode so that the volume will be a little louder.
I see, I setted it to in car but I don't notice any difference on the sound volume.
I found something to compare my sound volume with yours: the sounds on the little program to make music are barely hearable on my phone, I have to put my ear near the speaker to hear it. Is this normal?
That is normal. SE made the earpiece volume a tad low. There are drivers for the W810i so that you can increase the volume output. Mine has the drivers installed, and it is significantly louder than the stock level. Just do a Google search, and you'll find it.