Originally Posted by kriszna
Screen G5 is set to maximum brightness , the Xperia next approx. 75 % .
Thermal throbbing my friend, thermal throbbing.
G5 is quite battery savy when it comes to brightness. if the phone gets too hot, the MAX brightness is lowered.
After a benchmark, it's obvious that the screen brightness will go down on it's own.
Try this: Take your cold G5, put on max brightness with auto and go in harsh sunlight, point the light sensor directly. you will see the screen brightness suddenly jumped higher, but not for long, as the phone gets warm fast in sunlight + with this screen brightness.