iPhone4 backlight wouldn't auto on when receive call in sleep mode

[eddietah]

Is there any app in cydia that will auto turn on the iphone4 backlight when I receive call when iPhone4 4.2.1 is in sleep mode cos my iPhone4 4.2.1 backlight wouldn't auto turn on when I receive call if my iPhone4 4.2.1 is in sleep mode

[eddietah]

I install backliter from cydia and now it's works