The backlight on my iPhone 6s is not lighting up

"If it turns out the issue is on the board and not the screen, which is very likely, you will have to send it to someone to repair the backlight circuitry. I offer this service here in Australia, but there are people all around the world that can help you.

Basically i expect the issue to be a backlight ""filter"", or the diode that powers the backlight, which commonly blow when a short or too much current is drawn on the backlight anode line.

Check out the link on my profile to locate someone near you. They all come highly recommended"

"You can repair the backlight, however it's a crazy difficult annoying process. You'd be better off just putting a new display assembly on there. Too bad you don't have pictures of this led Apple logo. Sounds sweet

iPhone 6s LCD and Digitizer - Original LCD

Here's a link to a 6s backlight, if I don't get reported

https://www.google.com/aclk?sa=L&ai=C-zy...

Here's a guide on how to do it on a 5. Can't seem to find one for a 6"

I've been having a strange issue with iPhone 6s backlights coming on and going back out seemingly at random until I noticed something. If your 6s backlight doesn't come on after a screen replacement, unplug the camera/speaker cable and retest. If it suddenly works, you're shorting out the backlight. The large chip on the back of the 6s screen cable CANNOT contact the upper cable assembly in any way. For some reason, this tends to cause a short between the camera flex and the backlight. When the camera flex cover is in position, and that small black strap pulls the cable assembly up and snug, you have to make sure it's straight across. If that long, rectangular chip contacts the assembly, it'll cause problems.

It is an issue with either the motherboard or the new screen. Do a hard reset and as it is coming up Hold your finger over the light sensor, if the backlight is on auto adjust the screen will stay on. The problem seems to be with the backlight control like the new screen can't support full brightness. Turn off auto dim and slide the brightness all the way to dim do a hard reset and see if it comes up.

Hi jj1355810, the led logo you tried to add works making contact with the pins the backlight uses to connect to the lcd and takes power from that. It looks like you damaged that part or the backlight itself making contact between the different pins of the backlight shorting them. I would suggest to try to resold the pins of the backlight or try to put a new one, it's not a difficult operation but the 6s' backlight is way more expensive because it contains the touch 3d chip. Hope this can help you.

If the screen isn’t totally dark, go into settings, then  brightness—push the slider over to the right.    Mine had somehow gotten pushed to the left.