ผมเจอปัญหาครับว่าจะเข้า Service Mode โดยการกด *#0011#
ปัญหามีอยู่ว่า พอกด *#0011# แล้วมันก็เข้าหน้า
back
Menu key > Key input > 1 > Ok
The screen will display a ‘1’ for a few seconds and then automatically switch to ‘ServiceMode’ menu
Press the menu item: [8] WB-AMR Status

If its on you should see:
WB-AMR SETTING: ON
GSM WB: OFF
UMTS WB: ON

To turn HD voice on do the following:
Dial: *#0011#
Menu key > back
Menu key > Key input > 1 > Ok
The screen will display a ‘1’ for a few seconds and then automatically switch to ‘ServiceMode’ menu
Menu key > back
Press menu item: [7] DEBUG SCREEN > [7] WB-AMR SETTINGS > [1] WB-AMR ENABLE
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