Chosen Solution

I replaced my s5 active screen everything went well, but the only thing now is that the brightness its really low even on High, I can’t see the screen in daylight its too dark.

Yasmin Gomez, If you have already tried different settings, not on battery save mode and nothing helps, you may have gotten a faulty screen, return for replacement/refund. Good luck. I hope this helped you out, if so let me know by pressing the helpful button. http://www.samsung.com/ie/support/skp/fa

Sounds like you only put in a new glass with the same dark LCD. If your screen is dark, you will need to replace the LCD itself. Did you replace the LCD as well as the glass? If not, this is the issue and you’ll need to buy a replacement.