1.Open MOBILE Uncle Tools, Then click ENGINEER MODE, then ENGINEER MODE (MTK), then go to HARDWARE TESTING tab.
3.After then Back , and Click to LOUD_SPEAKER_MODE
4.Then set RING Value in all LEVELS as i mentioned in Screen shots below ....
Do same process for SPH & SPH2
Value for different LEVELS is --- LEVL 0 - 195, LEVL 1 - 205, LEVL 2 - 215, LEVL 3 - 225, LEVL 4 - 235, LEVL 5 - 245, LEVL 6 - 255
complete Now start ur camera , record any video, Camera sound recording is increased.