Why Doesn’t My iPhone Turn On After Screen Replacement


It can be quite intimidating when your iPhone falls on ground and the screen gets shattered. Display problems, irresponsible LCD and unpleasant look, you just can’t help but have your iPhone LCD screen replaced as soon as possible. However, some users report that their iPhone won’t turn on after screen replacement. For your first thought, you might think that your phone just completely dead. The causes of the won’t-turn-on thing can be various. Actually, it could be easily fixed by yourself. You don’t have to ask your repair technician or care center for help at all. Below are a number of things you can do to fix your problem.

1. Power Distribution Issue

When you first notice that your iPhone LCD won’t turn on after screen replacement, power distribution could be the problem. You need to reboot your iPhone and it works for some devices. Turn off your iPhone, and disconnect the battery. Wait for about 10 to 20 seconds, reconnect it and turn the phone on.

disconnect iphone battery

2. The Dead Battery Issue

It is possible that your iPhone battery went dead after the LCD replacement. Start with troubleshooting to find out if the problem is caused by the battery. Simply plug your phone into the socket charger and switch it on. If the display still doesn’t show, disconnect the battery from your phone but remain the phone connected to the charger. If you see the Apple logo and iPhone boot loop on the display, then the problem possibly lies in your battery.

3. The Damage Board Issue

The other possible reason is that the board is damaged, which affects your original screen as well. In such a case, the best way is to visit an Apple care center or a repair shop for solutions.

damaged motherboard

4. Assembly Issue

In this case you should remove the 2 bottom screws and elevate your screen less than 90 degrees, and then remove the brackets that covers the LCD flex cables. With this done, disconnect the battery and drain the reserved power in your phones by holding the power button for a few seconds. Then reconnect the battery and place the flex cable brackets back to its position. Now, reconnect your screen and power your iPhone on.

5. Flex Cable Connection Issue

Like many other mobile devices, the iPhone screen is connected to the motherboard through flex cables. Above the flex cables, there is a bracket to protect the connection from damage. The flex cables may either be damaged physically or from a short circuit during screen replacement. If you can view metal solders at the point of connection between the screen backlight and the flex cables, this can be a sign for cable connection problem or damage.

For more iPhone repair tips please visit HCQS YouTube Channel:


6 thoughts on “Why Doesn’t My iPhone Turn On After Screen Replacement

  • August 26, 2019 at 7:08 am

    First my iphone 6plus start to stuck then the problem develop when it stuck then it goes to black screen i watched YouTube videos how to fix so i open it disconnect battery home button touch screen and display connector after few minutes i reconnect all connector but this time when i want to turn it on it just shows a logo then it turned itself off.. up to now it doesn’t turn on even i put on charger

    • September 10, 2019 at 2:05 am

      Is your iPhone keeps rebooting afterwards?

  • February 2, 2020 at 10:39 pm

    My Iphone 5s has a new battery and new screen.
    But apple logo just one time after pushing the power bottom comes up and gone. The screen light is got on for 10 minutes but it’s gone. and it’s back when I push the power bottom again.
    I think there is a hardware problem.
    What do you think?

  • March 10, 2020 at 9:09 pm

    my iphone 6 plus cracked and my lcd was broke but i could still see my screen and still touch itafter my screen replacement it wouldnt even turn on?

  • May 9, 2020 at 4:32 pm

    I just change the screen and the other hardware like home button. After the replacement, i tried and it was working. But when I put the screws back and close cover. I tried again, this time touch screen did not respond to my touches. And I open it again ti check the lcd connections. I close and tried again. This time it does not even turn on….

  • May 29, 2020 at 5:37 am

    For my iphone X the problem develop when I replaced the screen & tried to turn it on it turned on Face ID wasnt working then the real problem was when it died it didn’t come back on until plugged into charger, but I had to hold power button for to show its charging thenI went back into the phone disconnected the battery then the screen and camera and stuff. Then hooked back up the screen and then the battery so then I just put the screen back on then it started indicating it was charging on its on. Then after a while i noticed it wasnt coming on as if it was charging for ever. Then i tried turning it on the apple logo shows for a very long time then it cuts off, and shows apple logo again repeatedly i tried resetting as well still no difference.


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