Contact Samsung as soon as possible to start the repair process. If your screen is turning green, the display is defective and needs to be replaced. In some cases it will do this when unlocked too, in others it will look normal when the display is on like in this YouTube video. The phone slowly fades to a green screen when the phone is locked. The problem manifests itself typically (but not exclusively) if you have the always on screen enabled. A small number of Samsung Galaxy S7 and S7 Edge phones have a problem where the screen turns and stays green. If your screen has turned green, you’re not the only one. If the problem still rears its ugly head, contact your carrier or Samsung directly to see if you’re eligible for a replacement device. To wipe just your SD card, head over to Settings > Device Maintenance > Storage, then hit the three dots in the top right corner, and go Storage settings > SD card > Format. Be sure to backup your SD card contents before attempting this as formatting your card will wipe it of all data.

If the problem persists after a software update, or if there isn’t an update available, you can try formatting your SD card.

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