Prima di tutto scarichiamo Mobileuncle Tools dal play store:https://play.google.com/store/apps/deta ... le.toolbox 

Lo apriamo e seguiamo questi step:

Basics first: Terms and their meaning.Sph – Speaker volume levels during a telephone conversation, Mic – microphone sensitivity levels (note that it is not microphone volume), Ring – ringer volume, Media – volume while playing music, movies, games, FMR – FM radio volume, Matv – TVB VolumeMax Vol: 160 (you cannot set it, except in type -> media)

Steps:A. Open Mobile Uncle Tools and open engineering mode.B. Under engineering mode, go to ‘Audio’.

C. Go to ‘Normal Mode’.C1. Under ‘Type’ select ‘Mic’. Under ‘Level’ select ‘Level 0′.C2. Under ‘Value is 0~255′ enter 255. For all levels, from level 0-6 set the value as 255. This will ensure that your voice is audible to other person even when you turn down the speaker volume. Feel free with lower values if other person is hearing you too loud. Apply the same settings to ‘Headset Mode’ -> Mic and ‘Loudspeaker Mode’ -> Mic.C3. Next, under ‘Type’ select ‘Sph’. Under ‘Level’ select ‘Level 0′.C4. Enter these values under ‘Value is 0~160′ for various levels.

Level 0 -> 100Level 1 -> 120Level 2 -> 130Level 3 -> 135Level 4 -> 140Level 5 -> 150Level 6 -> 160

Again, feel free to experiment with these settings if the earpiece speaker volume is too low or too high for you.Apply the same settings (above) to ‘Headset Mode’ -> Sph, ‘Loudspeaker Mode’ -> Sph

C5. Next, under ‘Type’ select ‘Media’. Under ‘Level’ select ‘Level 0′.C6. Enter these values under ‘Value is 0~255′ for various levels.

Level 0 -> 100Level 1 -> 120Level 2 -> 150Level 3 -> 180Level 4 -> 200Level 5 -> 230Level 6 -> 255

Again, feel free to experiment with these settings if the music volume is too low or too high

for you.Apply the same setings (above) to‘Headset Mode’ -> FMR, Media and Matv‘Loudspeaker Mode’ -> Ring, FMR, Media and Matv

C7. Restart the phone after applying all the settings.

ringrazio la fonte e gli amici di un'altro forumpostate qui i vostri setting originali prima di smanettare e fate tanta attezione un'errata manovra potrebbe far andare in palla il dispositivo dunque ne io ne lo staff del forum ci assumiamo alcuna responsabilita.............. ciao a presto