There are a few things you can try if your iPhone 4 won’t turn on. The first thing to do is to make sure that the phone is actually turned off. To do this, hold down the power button until the “slide to power off” screen appears. If the phone doesn’t respond when you hold down the power button, then it’s likely that the battery is drained and needs to be charged.

It can take up to 24 hours for a dead iPhone 4 to turn on.

There are a few things you can try to revive a dead iPhone 4. First, try plugging it into the charger and see if it starts charging. If it doesn’t, try holding down the Home and Power buttons at the same time for about 10 seconds until the phone restarts. If that doesn’t work, you may need to take it to an Apple store or have a technician look at it.

There are a few things that could be causing your phone not to turn on. One possibility is that the battery is dead and needs to be charged. Another possibility is that there is a problem with the phone’s charging port, which may need to be repaired. Finally, there could also be a problem with the phone’s motherboard, which would require replacing the entire phone.

iPhone 4s charges relatively quickly, taking about two hours to go from completely dead to fully charged.

Plug your iPhone into a power source and hold down the home button and the lock button at the same time.

There is a way to turn on your iPhone 4 without the power button. If you have an iPhone 4S or later, you can use the AssistiveTouch feature. To turn on AssistiveTouch, go to Settings > General > Accessibility > AssistiveTouch and turn on the feature. With AssistiveTouch enabled, you can use your finger to tap the screen to turn on your iPhone.

There are a few things you can try if your iPhone won’t turn on or charge. First, make sure that your phone is actually turned off. To do this, hold down the power button until you see the “slide to power off” option. If your phone is still not turning on, try plugging it into a computer or charger and see if that makes a difference.

There are a few things that could be causing your iPhone not to turn on when charging. One possibility is that the charging cable is not properly plugged into the phone or the charger. Make sure the connector is properly seated in the port and that the charger is plugged into an outlet.Another possibility is that there is something wrong with your phone’s battery. If your iPhone has been having charging issues, it’s possible that the battery needs to be replaced.

If your iPhone’s screen is black, you may need to charge it. Plug the iPhone into a power outlet using the included USB cable. Once the iPhone is charging, you can turn it on by pressing and holding the Sleep/Wake button until the Apple logo appears.