https://support.apple.com/en-us/116940
Press and quickly release the volume up button. Press and quickly release the volume down button. Press and hold the side button until you see the Apple logo (this takes around 10 seconds). If your iPhone doesn't turn on, charge your iPhone for one hour and then try again. If your iPhone shows a low-charge battery, check your hardware and

https://www.ifixit.com/Troubleshooting/iPhone/Won't+Turn+On/405189
Faulty Battery or Charging Port. If the iPhone still doesn't turn on, it may have a dead battery or a bad charging port. Replace the battery with a partially charged one and see if the phone will turn on. If not, there may be a power button or logic board issue. If the phone does turn on, plug it in and see if the charging indication comes on.

https://www.youtube.com/watch?v=xL_0zmTv0ck
David & David explain how to fix an iPhone that won't turn on after charging for a long time. iPhones are designed to turn on automatically when they're conn

https://www.ifixit.com/Troubleshooting/iPhone/Wont+Turn+On/478131
For iPhone 8, X, 11, 12, 13, SE (2nd Gen), and SE (3rd Gen): Press and immediately release the volume up button. Press and immediately release the volume down button. Press and hold the power button. The apple logo should show up after around 10 seconds—once it does, release the power button. For iPhone 7:

https://www.howtogeek.com/774659/how-to-fix-an-iphone-that-wont-turn-on/
iPhones with Face ID, iPhone 8, and iPhone SE (2nd Gen): Press and release the Volume Up button, press and release the Volume Down button, then press and hold the Side button. Keep holding the Side button until you see an Apple logo on the screen. iPhone 7: Press and hold the Sleep/Wake button and the volume down button until you see the Apple

https://www.ifixit.com/Troubleshooting/iPhone_11/Will+Not+Turn+On/478192
If your phone does turn on while connected to a power source, you can check the battery health using the following steps: Open the Settings app on your phone. Navigate to the Battery settings tab. Select the Battery Health option from the Battery menu. Check the Maximum Capacity percentage.

https://www.upphone.com/fix/iphone/power/iphone-11-wont-turn-on-fix/
It's possible your iPhone 11 just looks like it won't turn on, when really it's frozen on a black screen. Quickly press and release the volume up button, then quickly press and release the volume down button, then press and hold the side button until the Apple logo appears on your iPhone's display. You may need to hold the side button for 30

https://www.businessinsider.com/guides/tech/why-wont-my-iphone-turn-on?op=1
To see if your phone has any life in it at all, try this: 1. Connect your ailing iPhone to a Lightning cable and plug it into a computer. 2. Start iTunes on the computer. 3. Check to see if iTunes

https://www.upphone.com/fix/iphone/power/iphone-13-wont-turn-on-heres-the-fix/
Press and hold the side button until your iPhone's display goes black. When the screen turns black, press and hold the volume down button while continuing to hold the side button. Hold both buttons for five seconds. After five seconds, release the side button, but continue to hold the volume down button.

https://www.payetteforward.com/iphone-wont-turn-on-how-to-fix/
my iphone 6s that was in the closet for a very long time, has a cracked display, took the case apart and nothing looked off. Also tried doing the button reset method. does not charge on my laptop and wall outlet. the charging port looks dirty so that might be the problem. but im pretty sure when an iphone does not have any charge, it supposed to display a red battery on the screen.

https://www.makeuseof.com/tag/iphone-wont-turn-on/
To let your iPhone turn on again, cool it down by placing it in a dry, cool place away from the sun. Never try to instantly cool down your iPhone by putting it in the freezer or next to an air conditioner. This can cause condensation to form, which will damage the device. 2. Charge Your iPhone.

https://beebom.com/fix-iphone-wont-turn-on/
Quickly press and release the volume up key. Immediately after this, press & release the volume down key. Finally, press & hold the power button until you see the Apple logo. For iPhone 7 & 7 Plus: Press and hold the volume down and power button until the Apple logo appears.

https://support.apple.com/en-ph/116940
On your iPhone 7 or iPhone 7 Plus. Press and hold both the side button and the volume down button until you see the Apple logo (this takes around 10 seconds). If your iPhone doesn't turn on, charge your iPhone for one hour and then try again. If your iPhone shows a low-charge battery, check your hardware and charge your iPhone again.

https://discussions.apple.com/thread/254585882
I left my iphone charging overnight and now it won't turn on. I have tried all the suggested solutions. Posted on Jan 25, 2023 3:33 AM. Best reply. ProustGiulio. Level 10. 208,283 points. Posted on Jan 25, 2023 3:36 AM. Try a "forced" restart of your unidentified iPhone model, using these instructions:--> Force restart iPhone.

https://support.apple.com/en-au/116940
Press and quickly release the volume-up button. Press and quickly release the volume-down button. Press and hold the side button until you see the Apple logo (this will take around 10 seconds). If your iPhone doesn't turn on, charge your iPhone for one hour and then try again. If your iPhone shows a low-charge battery, check your hardware and

https://www.lifewire.com/what-to-do-when-your-iphone-wont-turn-on-2000281
Restart iPhone. If charging the battery didn't turn your iPhone on, the next thing you should try is to restart the phone. To do this, hold down the on/off button at the top right corner or the right side of the phone for a few seconds. If the phone is off (not dead), it should turn on. If it's on, you may see the slider offering to turn it off.

https://www.ifixit.com/Troubleshooting/iPhone_12/Will+Not+Turn+On/482943
Press and immediately release the volume up button. Press and immediately release the volume down button. Press and hold the power button. The apple logo should show up after around 10 seconds—once it does, release the power button. Note that these button presses must be performed in quick succession.

https://www.imyfone.com/iphone-issues/iphone-died-and-wont-turn-on-while-charging/
And this is a common method most iPhone users would try to fix. including this iPhone died and won't turn back on during charging process. Step 1: Open your iTunes and connect your iPhone to the computer using the USB cable. Step 2: Click the Summary from the left side, then choose Restore iPhone on the right.

https://discussions.apple.com/thread/254531868
2.) Use a wall power outlet and check for firm connections between your charging cable, USB wall adapter, and wall outlet or AC power cable, or try a different outlet. 3.) Remove any debris from the charging port on the bottom of your device, then firmly plug your charging cable into your device.

https://www.ifixit.com/Answers/View/800773/Why+wontt+my+iPhone+13+turn+on+after+30+mins+of+charging
1 Answer. Here are a few things to try externally before you dive down the rabbit hole of opening up the phone and replacing parts. First, swap out the cable and charger. Either one could be the source of the problem, so it's important to test with different parts to verify they're working. Next, check the port itself.

https://support.apple.com/en-us/108805
Optimized Battery Charging is active only when your iPhone predicts that it will be connected to a charger for a long period of time. Your iPhone might get slightly warmer while it charges. To extend the lifespan of your battery, if the battery gets too warm, software might limit charging above 80 percent. Your iPhone will charge again when the

https://www.reddit.com/r/iphone/comments/108dsif/help_my_iphone_wont_turn_on/
Iphone 4s! It was charging, it reached 36%, it turned off and only showed the low battery logo in red and then tried to turn it on, showing the apple for a few seconds and it turned off doing the same thing for a long time. I managed to clean it and heat it, but nothing.

https://www.ifixit.com/Answers/View/252797/My+iPhone+will+not+turn+on+after+several+hours+of+charging.+HELP
iPhone 5 has known battery issues. If the phone registers the cable, I would look to replace the battery (genuine Apple replacement only) AND then also restore the iphone via iTunes, and set it up as a new iphone. If it doesn't register the cable being plugged in, try other cables / charging plugs, then look to replace the charging port.