Why is it that when I open the browser of Galaxy S3, the backlight becomes dimmer?
The dimming of backlight when opening the browser of Galaxy S3 is a power saving solution on the device.Hence, even if you set the main display backlight as very bright, the device will dim once you open the browser.
To change the brightness in the browser, please follow the steps below.
Go to Internet browser->Tap Menu->Brightness and Colors->Set to Default.
Note: Level 3 means you save more power while browsing but backlight is low.
Update for Jellybean:
Go to Internet Browser->Tap Menu->Brightness and just adjust the brightness of the browser or set to automatic.
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