Released September 25, 2015. Model A1688/A1633. Repair of this device is similar to previous generations, requiring screwdrivers and prying tools. Available as GSM or CDMA / 16, 64, or 128 GB / Silver, Gold, Space Gray, or Rose Gold options.

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Backlight flashes for a second before turning off

I have an iPhone 6s and I received a replacement screen to swap out the cracked screen. The screen replacement went without issue, but after installing the new screen. I can turn on the phone and the backlight will flash for a moment before turning off. The backlight comes on fine when the phone is completely dead and plugged in showing the white/red charge icon. I have attempted to reset the device, but still have no working backlight. Any suggestions?

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Was the battery unplugged throughout the whole screen replacement process? If not then the backlight filter may have been shorted when unplugging / plugging in the display ribbon cables.


did you observed abnormal heat before battery dead?


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Ryan Collins ,

Unplug the LCD connector and charge the phone around 15 mins then unplug the charger and connect the LCD connector and check whether phone charge at last 5% if it is something wrong with your new LCD backlight. otherwise you may need to check the logic board.

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Yep. I don't think anything blew since the circuit does work. He could also leave the phone turned off, plug it in for an hour or two, then reset using home and power held down until the Apple logo appears.


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